diff --git a/src/d_iwad.cpp b/src/d_iwad.cpp
index 1fc63e03d..6fa8604a0 100644
--- a/src/d_iwad.cpp
+++ b/src/d_iwad.cpp
@@ -292,6 +292,7 @@ void FIWadManager::ParseIWadInfos(const char *fn)
 int FIWadManager::ScanIWAD (const char *iwad)
 {
 	FResourceFile *iwadfile = FResourceFile::OpenResourceFile(iwad, NULL, true);
+	if (iwadfile == NULL) iwadfile = FResourceFile::OpenDirectory(iwad, true); //mxd. A directory can also work as an IWAD
 
 	if (iwadfile != NULL)
 	{
@@ -344,7 +345,7 @@ int FIWadManager::CheckIWAD (const char *doomwaddir, WadStuff *wads)
 			
 			iwad.Format ("%s%s%s", doomwaddir, slash, mIWadNames[i].GetChars());
 			FixPathSeperator (iwad);
-			if (FileExists (iwad))
+			if (DirEntryExists(iwad))
 			{
 				wads[i].Type = ScanIWAD (iwad);
 				if (wads[i].Type != -1)
@@ -413,7 +414,7 @@ int FIWadManager::IdentifyVersion (TArray<FString> &wadfiles, const char *iwad,
 		}
 		else
 		{
-			DefaultExtension (custwad, ".wad");
+			if(FileExists(custwad)) DefaultExtension (custwad, ".wad"); //mxd. Don't treat folders as .wads
 			iwadparm = custwad;
 			mIWadNames[0] = custwad;
 			CheckIWAD ("", &wads[0]);
diff --git a/src/textures/multipatchtexture.cpp b/src/textures/multipatchtexture.cpp
index b7e664355..fbbb8b70f 100644
--- a/src/textures/multipatchtexture.cpp
+++ b/src/textures/multipatchtexture.cpp
@@ -1325,6 +1325,24 @@ void FMultiPatchTexture::ResolvePatches()
 		for (int i = 0; i < NumParts; i++)
 		{
 			FTextureID texno = TexMan.CheckForTexture(Inits[i].TexName, Inits[i].UseType);
+			if (texno == id)	// we found ourselves. Try looking for another one with the same name which is not a multipatch texture itself.
+			{
+				TArray<FTextureID> list;
+				TexMan.ListTextures(Inits[i].TexName, list);
+				for (int i = list.Size() - 1; i >= 0; i--)
+				{
+					if (list[i] != id && !TexMan[list[i]]->bMultiPatch)
+					{
+						texno = list[i];
+						break;
+					}
+				}
+				if (texno == id)
+				{
+					if (Inits[i].HasLine) Inits[i].sc.Message(MSG_WARNING, "Texture '%s' references itself as patch\n", Inits[i].TexName.GetChars());
+					else Printf(TEXTCOLOR_YELLOW  "Texture '%s' references itself as patch\n", Inits[i].TexName.GetChars());
+				}
+			}
 
 			if (!texno.isValid())
 			{