Misc fixing

source/backend/engine/CarlaEngine.cpp

@@ -1164,7 +1164,7 @@ bool CarlaEngine::loadFilename(const char* const filename)
     }
 
     QString baseName(fileInfo.baseName());
-    QString extension(fileInfo.suffix());
+    QString extension(fileInfo.suffix().toLower());
 
     const char* const baseNameStr(baseName.toUtf8().constData());
 

source/carla.py

@@ -1723,6 +1723,8 @@ class CarlaMainW(QMainWindow):
 
             diskFolders = toList(settings.value("DiskFolders", [HOME]))
 
+            self.ui.cb_disk.setItemData(0, HOME)
+
             for i in range(len(diskFolders)):
                 if i == 0: continue
                 folder = diskFolders[i]