diff --git a/engine/client/cl_game.c b/engine/client/cl_game.c
index e47dadbe..b28a0ba2 100644
--- a/engine/client/cl_game.c
+++ b/engine/client/cl_game.c
@@ -243,7 +243,7 @@ void CL_InitCDAudio( const char *filename )
 
 		if( ++c > MAX_CDTRACKS - 1 )
 		{
-			MsgDev( D_WARN, "CD_Init: too many tracks %i in %s\n", filename, MAX_CDTRACKS );
+			MsgDev( D_WARN, "CD_Init: too many tracks %i in %s\n", MAX_CDTRACKS, filename );
 			break;
 		}
 	}
@@ -3585,7 +3585,7 @@ void NetAPI_SendRequest( int context, int request, int flags, double timeout, ne
 	{
 		// local servers request
 		Q_snprintf( req, sizeof( req ), "netinfo %i %i %i", PROTOCOL_VERSION, context, request );
-		Netchan_OutOfBandPrint( NS_CLIENT, nr->resp.remote_address, req );
+		Netchan_OutOfBandPrint( NS_CLIENT, nr->resp.remote_address, "%s", req );
 	}
 }
 
diff --git a/engine/client/cl_gameui.c b/engine/client/cl_gameui.c
index f0af8331..a3bbf5e0 100644
--- a/engine/client/cl_gameui.c
+++ b/engine/client/cl_gameui.c
@@ -915,7 +915,7 @@ pfnHostEndGame
 static void pfnHostEndGame( const char *szFinalMessage )
 {
 	if( !szFinalMessage ) szFinalMessage = "";
-	Host_EndGame( true, szFinalMessage );
+	Host_EndGame( true, "%s", szFinalMessage );
 }
 
 /*
diff --git a/engine/client/cl_main.c b/engine/client/cl_main.c
index 584706b2..906246c7 100644
--- a/engine/client/cl_main.c
+++ b/engine/client/cl_main.c
@@ -1796,7 +1796,7 @@ void CL_ConnectionlessPacket( netadr_t from, sizebuf_t *msg )
 		if( crcValue == crcValue2 )
 		{
 			// packet was sucessfully delivered, adjust the fragment size and get challenge
-			Msg( "CRC %p is matched, get challenge, fragment size %d\n", crcValue, cls.max_fragment_size );
+			Msg( "CRC 0x%08x is matched, get challenge, fragment size %d\n", crcValue, cls.max_fragment_size );
 			Netchan_OutOfBandPrint( NS_CLIENT, from, "getchallenge\n" );
 			Cvar_SetValue( "cl_dlmax", cls.max_fragment_size );
 			cls.connect_time = host.realtime;
@@ -1813,7 +1813,7 @@ void CL_ConnectionlessPacket( netadr_t from, sizebuf_t *msg )
 				return;
 			}
 
-			Msg( "got testpacket, CRC mismatched %p should be %p, trying next fragment size %d\n", crcValue2, crcValue, cls.max_fragment_size >> 1 );
+			Msg( "got testpacket, CRC mismatched 0x%08x should be 0x%08x, trying next fragment size %d\n", crcValue2, crcValue, cls.max_fragment_size >> 1 );
 			// trying the next size of packet
 			cls.connect_time = MAX_HEARTBEAT;
 		}
@@ -2189,7 +2189,7 @@ void CL_ProcessFile( qboolean successfully_received, const char *filename )
 				}
 				else
 				{
-					Con_Printf( "Downloaded %i bytes for purported %i byte file, ignoring download\n", p->nDownloadSize );
+					Con_Printf( "Downloaded %i bytes for purported %i byte file, ignoring download\n", cls.netchan.tempbuffersize, p->nDownloadSize );
 				}
 
 				if( cls.netchan.tempbuffer )
diff --git a/engine/client/cl_parse.c b/engine/client/cl_parse.c
index f1cf3232..6e028ced 100644
--- a/engine/client/cl_parse.c
+++ b/engine/client/cl_parse.c
@@ -730,7 +730,7 @@ void CL_BatchResourceRequest( qboolean initialize )
 			if( !COM_IsSafeFileToDownload( p->szFileName ))
 			{
 				CL_RemoveFromResourceList( p );
-				MsgDev( D_WARN, "Invalid file type...skipping download of %s\n", p );
+				MsgDev( D_WARN, "Invalid file type...skipping download of %s\n", p->szFileName );
 				Mem_Free( p );
 				break;
 			}
@@ -2493,4 +2493,4 @@ void CL_ParseServerMessage( sizebuf_t *msg, qboolean normal_message )
 			CL_WriteDemoMessage( true, starting_count, msg );
 		}
 	}
-}
\ No newline at end of file
+}
diff --git a/engine/common/cmd.c b/engine/common/cmd.c
index 882f123c..a3fe80ce 100644
--- a/engine/common/cmd.c
+++ b/engine/common/cmd.c
@@ -322,7 +322,7 @@ void Cmd_Echo_f( void )
 	int	i;
 	
 	for( i = 1; i < Cmd_Argc(); i++ )
-		Con_Printf( Cmd_Argv( i ));
+		Con_Printf( "%s", Cmd_Argv( i ));
 	Con_Printf( "\n" );
 }
 
diff --git a/engine/common/common.h b/engine/common/common.h
index 4e29918e..64f4d389 100644
--- a/engine/common/common.h
+++ b/engine/common/common.h
@@ -116,7 +116,7 @@ XASH SPECIFIC			- sort of hack that works only in Xash3D not in GoldSrc
 #define GAME_EXPORT
 #endif
 
-typedef unsigned long	dword;
+typedef unsigned int	dword;
 typedef unsigned int	uint;
 typedef char		string[MAX_STRING];
 typedef struct file_s	file_t;		// normal file
@@ -439,7 +439,7 @@ typedef struct host_parm_s
 
 	// command line parms
 	int		argc;
-	const char	**argv;
+	char	**argv;
 
 	double		realtime;		// host.curtime
 	double		frametime;	// time between engine frames
diff --git a/engine/common/con_utils.c b/engine/common/con_utils.c
index 628185d0..fde70227 100644
--- a/engine/common/con_utils.c
+++ b/engine/common/con_utils.c
@@ -903,7 +903,7 @@ static void Cmd_WriteHelp(const char *name, const char *unused, const char *desc
 
 void Cmd_WriteOpenGLVariables( file_t *f )
 {
-	Cvar_LookupVars( FCVAR_GLCONFIG, NULL, f, Cmd_WriteOpenGLCvar ); 
+	Cvar_LookupVars( FCVAR_GLCONFIG, NULL, f, (setpair_t)Cmd_WriteOpenGLCvar );
 }
 
 #ifndef XASH_DEDICATED
@@ -1057,9 +1057,9 @@ void Key_EnumCmds_f( void )
 		FS_Printf( f, "//=======================================================================\n");
 
 		FS_Printf( f, "\n\n\t\t\tconsole variables\n\n");
-		Cvar_LookupVars( 0, NULL, f, Cmd_WriteHelp ); 
+		Cvar_LookupVars( 0, NULL, f, (setpair_t)Cmd_WriteHelp );
 		FS_Printf( f, "\n\n\t\t\tconsole commands\n\n");
-		Cmd_LookupCmds( NULL, f, Cmd_WriteHelp ); 
+		Cmd_LookupCmds( NULL, f, (setpair_t)Cmd_WriteHelp );
   		FS_Printf( f, "\n\n");
 		FS_Close( f );
 		Con_Printf( "help.txt created\n" );
diff --git a/engine/common/filesystem.c b/engine/common/filesystem.c
index 3a752b68..73bfab1b 100644
--- a/engine/common/filesystem.c
+++ b/engine/common/filesystem.c
@@ -888,7 +888,7 @@ static void FS_WriteGameInfo( const char *filepath, gameinfo_t *GameInfo )
 	file_t	*f = FS_Open( filepath, "w", false ); // we in binary-mode
 	if( !f ) Sys_Error( "FS_WriteGameInfo: can't write %s\n", filepath );	// may be disk-space is out?
 
-	FS_Print( f, "// generated by Xash3D\n\n\n" );
+	FS_Printf( f, "// generated by %s %s-%s (%s-%s)\n\n\n", XASH_ENGINE_NAME, XASH_VERSION, Q_buildcommit(), Q_buildos(), Q_buildarch() );
 
 	if( Q_strlen( GameInfo->basedir ))
 		FS_Printf( f, "basedir\t\t\"%s\"\n", GameInfo->basedir );
@@ -1588,7 +1588,7 @@ static file_t *FS_SysOpen( const char *filepath, const char *mode )
 			opt |= O_BINARY;
 			break;
 		default:
-			MsgDev( D_ERROR, "FS_SysOpen: %s: unknown char in mode (%c)\n", filepath, mode, mode[ind] );
+			MsgDev( D_ERROR, "FS_SysOpen: %s: unknown char %c in mode (%s)\n", filepath, mode[ind], mode );
 			break;
 		}
 	}
diff --git a/engine/common/host.c b/engine/common/host.c
index 5baefccc..d802e0bd 100644
--- a/engine/common/host.c
+++ b/engine/common/host.c
@@ -553,7 +553,7 @@ void Host_Error( const char *error, ... )
 	if( recursive )
 	{ 
 		Con_Printf( "Host_RecursiveError: %s", hosterror2 );
-		Sys_Error( hosterror1 );
+		Sys_Error( "%s", hosterror1 );
 		return; // don't multiple executes
 	}
 
@@ -685,7 +685,7 @@ void Host_InitCommon( int argc, char **argv, const char *progname, qboolean bCha
 		if( !( baseDir = SDL_GetBasePath() ) )
 			Sys_Error( "couldn't determine current directory: %s", SDL_GetError() );
 		Q_strncpy( host.rootdir, baseDir, sizeof( host.rootdir ) );
-		SDL_free( baseDir );
+		SDL_free( (void*)baseDir );
 #else
 		if( !getcwd( host.rootdir, sizeof(host.rootdir) ) )
 		{
diff --git a/engine/common/hpak.c b/engine/common/hpak.c
index a83ed0e4..1c4fa210 100644
--- a/engine/common/hpak.c
+++ b/engine/common/hpak.c
@@ -812,7 +812,7 @@ void HPAK_RemoveLump( const char *name, resource_t *pResource )
 
 	if( !HPAK_FindResource( &hpak_read, pResource->rgucMD5_hash, NULL ))
 	{
-		MsgDev( D_ERROR, "HPAK doesn't contain specified lump: %s\n", pResource->szFileName, read_path );
+		MsgDev( D_ERROR, "HPAK %s doesn't contain specified lump: %s\n", read_path, pResource->szFileName );
 		Mem_Free( hpak_read.entries );
 		Mem_Free( hpak_save.entries );
 		FS_Close( file_src );
@@ -1023,7 +1023,7 @@ void HPAK_Extract_f( void )
 
 		if( entry->disksize <= 0 || entry->disksize >= HPAK_MAX_SIZE )
 		{
-			MsgDev( D_WARN, "Unable to extract data, size invalid:  %s\n", nDataSize );
+			MsgDev( D_WARN, "Unable to extract data, size invalid: %i\n", nDataSize );
 			continue;
 		}
 
@@ -1085,4 +1085,4 @@ void HPAK_Init( void )
 	hpk_maxsize = Cvar_Get( "hpk_maxsize", "0", FCVAR_ARCHIVE, "set limit by size for all HPK-files ( 0 - unlimited )" );
 
 	gp_hpak_queue = NULL;
-}
\ No newline at end of file
+}
diff --git a/engine/common/mod_bmodel.c b/engine/common/mod_bmodel.c
index b39b6b5b..0074dcef 100644
--- a/engine/common/mod_bmodel.c
+++ b/engine/common/mod_bmodel.c
@@ -1528,7 +1528,7 @@ static void Mod_LoadEntities( dbspmodel_t *bmod )
 		{
 			if( ft1 > ft2 )
 			{
-				Con_Printf( S_WARN "Entity patch is older than bsp. Ignored.\n", entfilename );			
+				Con_Printf( S_WARN "Entity patch %s is older than bsp. Ignored.\n", entfilename );
 			}
 			else if(( entpatch = FS_LoadFile( entfilename, &entpatchsize, true )) != NULL )
 			{
@@ -3043,4 +3043,4 @@ int Mod_SaveLump( const char *filename, const int lump, void *lumpdata, int lump
 
 	FS_Close( f );
 	return LUMP_SAVE_OK;
-}
\ No newline at end of file
+}
diff --git a/engine/common/system.c b/engine/common/system.c
index 141365fc..b7f4a956 100644
--- a/engine/common/system.c
+++ b/engine/common/system.c
@@ -326,7 +326,7 @@ Sys_ParseCommandLine
 
 ==================
 */
-void Sys_ParseCommandLine( int argc, const char** argv )
+void Sys_ParseCommandLine( int argc, char** argv )
 {
 	const char	*blank = "censored";
 	int		i;
@@ -492,8 +492,8 @@ qboolean Sys_LoadLibrary( dll_info_t *dll )
 error:
 	MsgDev( D_NOTE, " - failed\n" );
 	Sys_FreeLibrary( dll ); // trying to free 
-	if( dll->crash ) Sys_Error( errorstring );
-	else MsgDev( D_ERROR, errorstring );			
+	if( dll->crash ) Sys_Error( "%s", errorstring );
+	else MsgDev( D_ERROR, "%s", errorstring );
 
 	return false;
 }
diff --git a/engine/common/system.h b/engine/common/system.h
index c8bb68a9..cfbb4dd4 100644
--- a/engine/common/system.h
+++ b/engine/common/system.h
@@ -87,7 +87,7 @@ void Sys_Error( const char *error, ... ) _format( 1 );
 qboolean Sys_LoadLibrary( dll_info_t *dll );
 void* Sys_GetProcAddress( dll_info_t *dll, const char* name );
 qboolean Sys_FreeLibrary( dll_info_t *dll );
-void Sys_ParseCommandLine( int argc, const char **argv );
+void Sys_ParseCommandLine( int argc, char **argv );
 void Sys_MergeCommandLine( void );
 void Sys_SetupCrashHandler( void );
 void Sys_RestoreCrashHandler( void );
diff --git a/engine/menu_int.h b/engine/menu_int.h
index e48394ea..ef941f8e 100644
--- a/engine/menu_int.h
+++ b/engine/menu_int.h
@@ -83,10 +83,10 @@ typedef struct ui_enginefuncs_s
 	char*	(*pfnCmd_Args)( void );
 
 	// debug messages (in-menu shows only notify)	
-	void	(*Con_Printf)( char *fmt, ... );
-	void	(*Con_DPrintf)( char *fmt, ... );
-	void	(*Con_NPrintf)( int pos, char *fmt, ... );
-	void	(*Con_NXPrintf)( struct con_nprint_s *info, char *fmt, ... );
+	void	(*Con_Printf)( const char *fmt, ... );
+	void	(*Con_DPrintf)( const char *fmt, ... );
+	void	(*Con_NPrintf)( int pos, const char *fmt, ... );
+	void	(*Con_NXPrintf)( struct con_nprint_s *info, const char *fmt, ... );
 
 	// sound handlers
 	void	(*pfnPlayLocalSound)( const char *szSound );
diff --git a/engine/server/sv_client.c b/engine/server/sv_client.c
index 7e128750..31a313c2 100644
--- a/engine/server/sv_client.c
+++ b/engine/server/sv_client.c
@@ -87,8 +87,9 @@ void SV_GetChallenge( netadr_t from )
 	Netchan_OutOfBandPrint( NS_SERVER, svs.challenges[i].adr, "challenge %i", svs.challenges[i].challenge );
 }
 
-int SV_GetFragmentSize( sv_client_t *cl )
+int SV_GetFragmentSize( void *pcl )
 {
+	sv_client_t *cl = (sv_client_t*)pcl;
 	int	cl_frag_size;
 
 	if( Netchan_IsLocal( &cl->netchan ))
@@ -736,7 +737,7 @@ Responds with long info for local and broadcast requests
 */
 void SV_BuildNetAnswer( netadr_t from )
 {
-	char	string[MAX_INFO_STRING], answer[512];
+	char	string[MAX_INFO_STRING];
 	int	version, context, type;
 	int	i, count = 0;
 
@@ -755,21 +756,18 @@ void SV_BuildNetAnswer( netadr_t from )
 		Info_SetValueForKey( string, "neterror", "protocol", MAX_INFO_STRING );
 
 		// send error unsupported protocol
-		Q_snprintf( answer, sizeof( answer ), "netinfo %i %i %s\n", context, type, string );
-		Netchan_OutOfBandPrint( NS_SERVER, from, answer );
+		Netchan_OutOfBandPrint( NS_SERVER, from, "netinfo %i %i %s\n", context, type, string );
 		return;
 	}
 
 	if( type == NETAPI_REQUEST_PING )
 	{
-		Q_snprintf( answer, sizeof( answer ), "netinfo %i %i %s\n", context, type, "" );
-		Netchan_OutOfBandPrint( NS_SERVER, from, answer );
+		Netchan_OutOfBandPrint( NS_SERVER, from, "netinfo %i %i %s\n", context, type, "" );
 	}
 	else if( type == NETAPI_REQUEST_RULES )
 	{
 		// send serverinfo
-		Q_snprintf( answer, sizeof( answer ), "netinfo %i %i %s\n", context, type, svs.serverinfo );
-		Netchan_OutOfBandPrint( NS_SERVER, from, answer );
+		Netchan_OutOfBandPrint( NS_SERVER, from, "netinfo %i %i %s\n", context, type, svs.serverinfo );
 	}
 	else if( type == NETAPI_REQUEST_PLAYERS )
 	{
@@ -787,8 +785,7 @@ void SV_BuildNetAnswer( netadr_t from )
 		}
 
 		// send playernames
-		Q_snprintf( answer, sizeof( answer ), "netinfo %i %i %s\n", context, type, string );
-		Netchan_OutOfBandPrint( NS_SERVER, from, answer );
+		Netchan_OutOfBandPrint( NS_SERVER, from, "netinfo %i %i %s\n", context, type, string );
 	}
 	else if( type == NETAPI_REQUEST_DETAILS )
 	{
@@ -804,8 +801,7 @@ void SV_BuildNetAnswer( netadr_t from )
 		Info_SetValueForKey( string, "map", sv.name, MAX_INFO_STRING );
 
 		// send serverinfo
-		Q_snprintf( answer, sizeof( answer ), "netinfo %i %i %s\n", context, type, string );
-		Netchan_OutOfBandPrint( NS_SERVER, from, answer );
+		Netchan_OutOfBandPrint( NS_SERVER, from, "netinfo %i %i %s\n", context, type, string );
 	}
 	else
 	{
@@ -813,8 +809,7 @@ void SV_BuildNetAnswer( netadr_t from )
 		Info_SetValueForKey( string, "neterror", "undefined", MAX_INFO_STRING );
 
 		// send error undefined request type
-		Q_snprintf( answer, sizeof( answer ), "netinfo %i %i %s\n", context, type, string );
-		Netchan_OutOfBandPrint( NS_SERVER, from, answer );
+		Netchan_OutOfBandPrint( NS_SERVER, from, "netinfo %i %i %s\n", context, type, string );
 	}
 }
 
@@ -1934,10 +1929,11 @@ static qboolean SV_Begin_f( sv_client_t *cl )
 SV_SendBuildInfo_f
 ==================
 */
-static void SV_SendBuildInfo_f( sv_client_t *cl )
+static qboolean SV_SendBuildInfo_f( sv_client_t *cl )
 {
 	SV_ClientPrintf( cl, "Server running %s %s (build %i-%s, %s-%s)\n",
 		XASH_ENGINE_NAME, XASH_VERSION, Q_buildnum(), Q_buildcommit(), Q_buildos(), Q_buildarch() );
+	return true;
 }
 
 
diff --git a/engine/server/sv_init.c b/engine/server/sv_init.c
index f24eb596..e09481d4 100644
--- a/engine/server/sv_init.c
+++ b/engine/server/sv_init.c
@@ -565,7 +565,7 @@ void SV_ActivateServer( int runPhysics )
 		Con_Printf( "%i player server started\n", svs.maxclients );
 	else Con_Printf( "Game started\n" );
 
-	Log_Printf( "Started map \"%s\" (CRC \"%i\")\n", sv.name, sv.worldmapCRC );
+	Log_Printf( "Started map \"%s\" (CRC \"%lu\")\n", sv.name, sv.worldmapCRC );
 
 	// dedicated server purge unused resources here
 	if( host.type == HOST_DEDICATED )