diff --git a/dlls/hgrunt.cpp b/dlls/hgrunt.cpp
index 7f7e39e5..d8d198db 100644
--- a/dlls/hgrunt.cpp
+++ b/dlls/hgrunt.cpp
@@ -278,7 +278,7 @@ void CHGrunt::GibMonster( void )
 	Vector vecGunPos;
 	Vector vecGunAngles;
 
-	if( GetBodygroup( 2 ) != 2 )
+	if( GetBodygroup( GUN_GROUP ) != GUN_NONE )
 	{
 		// throw a gun if the grunt has one
 		GetAttachment( 0, vecGunPos, vecGunAngles );
@@ -604,7 +604,7 @@ void CHGrunt::TraceAttack( entvars_t *pevAttacker, float flDamage, Vector vecDir
 	if( ptr->iHitgroup == 11 )
 	{
 		// make sure we're wearing one
-		if( GetBodygroup( 1 ) == HEAD_GRUNT && ( bitsDamageType & (DMG_BULLET | DMG_SLASH | DMG_BLAST | DMG_CLUB ) ) )
+		if( GetBodygroup( HEAD_GROUP ) == HEAD_GRUNT && ( bitsDamageType & (DMG_BULLET | DMG_SLASH | DMG_BLAST | DMG_CLUB ) ) )
 		{
 			// absorb damage
 			flDamage -= 20;
@@ -849,27 +849,30 @@ void CHGrunt::HandleAnimEvent( MonsterEvent_t *pEvent )
 	{
 		case HGRUNT_AE_DROP_GUN:
 		{
-			Vector vecGunPos;
-			Vector vecGunAngles;
+			if ( GetBodygroup( GUN_GROUP ) != GUN_NONE )
+			{
+				Vector vecGunPos;
+				Vector vecGunAngles;
 
-			GetAttachment( 0, vecGunPos, vecGunAngles );
+				GetAttachment( 0, vecGunPos, vecGunAngles );
 
-			// switch to body group with no gun.
-			SetBodygroup( GUN_GROUP, GUN_NONE );
+				// switch to body group with no gun.
+				SetBodygroup( GUN_GROUP, GUN_NONE );
 
-			// now spawn a gun.
-			if( FBitSet( pev->weapons, HGRUNT_SHOTGUN ) )
-			{
-				 DropItem( "weapon_shotgun", vecGunPos, vecGunAngles );
-			}
-			else
-			{
-				 DropItem( "weapon_9mmAR", vecGunPos, vecGunAngles );
-			}
+				// now spawn a gun.
+				if( FBitSet( pev->weapons, HGRUNT_SHOTGUN ) )
+				{
+					 DropItem( "weapon_shotgun", vecGunPos, vecGunAngles );
+				}
+				else
+				{
+					 DropItem( "weapon_9mmAR", vecGunPos, vecGunAngles );
+				}
 
-			if( FBitSet( pev->weapons, HGRUNT_GRENADELAUNCHER ) )
-			{
-				DropItem( "ammo_ARgrenades", BodyTarget( pev->origin ), vecGunAngles );
+				if( FBitSet( pev->weapons, HGRUNT_GRENADELAUNCHER ) )
+				{
+					DropItem( "ammo_ARgrenades", BodyTarget( pev->origin ), vecGunAngles );
+				}
 			}
 		}
 			break;
diff --git a/dlls/wscript b/dlls/wscript
index 2c372154..00781777 100644
--- a/dlls/wscript
+++ b/dlls/wscript
@@ -20,7 +20,7 @@ def configure(conf):
 			conf.fatal("Could not find hl.def")
 
 def build(bld):
-	excluded_files = ['mpstubb.cpp', 'stats.cpp', 'prop.cpp', 'Wxdebug.cpp']
+	excluded_files = ['mpstubb.cpp', 'stats.cpp', 'Wxdebug.cpp']
 
 	source = bld.path.ant_glob('**/*.cpp', excl=excluded_files)
 	source += bld.path.parent.ant_glob('pm_shared/*.c')
diff --git a/wscript b/wscript
index 353f9016..71f485f0 100644
--- a/wscript
+++ b/wscript
@@ -10,6 +10,7 @@ import re
 VERSION = '2.4'
 APPNAME = 'hlsdk-portable'
 top = '.'
+default_prefix = '/'
 
 Context.Context.line_just = 60 # should fit for everything on 80x26
 
@@ -21,7 +22,7 @@ def get_taskgen_count(self):
 
 def options(opt):
 	opt.load('reconfigure compiler_optimizations xcompile compiler_cxx compiler_c clang_compilation_database strip_on_install msdev msvs msvc subproject')
-	
+
 	grp = opt.add_option_group('Common options')
 
 	grp.add_option('-8', '--64bits', action = 'store_true', dest = 'ALLOW64', default = False,
@@ -238,6 +239,9 @@ def configure(conf):
 	conf.add_subproject('cl_dll')
 
 def build(bld):
+	if bld.is_install and not bld.options.destdir:
+		bld.fatal('Set the install destination directory using --destdir option')
+
 	# don't clean QtCreator files and reconfigure saved options
 	bld.clean_files = bld.bldnode.ant_glob('**',
 		excl='*.user configuration.py .lock* *conf_check_*/** config.log %s/*' % Build.CACHE_DIR,