- added a check to output a clear error message if no IWAD definitions could be loaded.

SVN r3119 (trunk)

src/d_iwad.cpp

@@ -269,6 +269,10 @@ void FIWadManager::ParseIWadInfos(const char *fn)
 		}
 		delete resfile;
 	}
+	if (mIWadNames.Size() == 0 || mIWads.Size() == 0)
+	{
+		I_FatalError("No IWAD definitions found");
+	}
 }