if profile is corrupt and is reset, need to set default lang again

Fixes https://anki.tenderapp.com/discussions/ankidesktop/37994-traceback-error-with-windows-64bit-standard-installation

qt/aqt/profiles.py

@@ -363,6 +363,7 @@ create table if not exists profiles
             except:
                 print("resetting corrupt _global")
                 result.loadError = True
+                result.firstTime = True
 
         # if new or read failed, create a default global profile
         self.meta = metaConf.copy()