Whenever I open the window formatter for any procedure type in the AppGen the control templates load up really slowly. It’s as if the IDE is parsing through all the control template files one by one - each and every time the window formatter is opened. It takes around 5 seconds to get through them all and only after it has finished can I work on the actual window. I have had this before but I cannot remember how I fixed it and it went away by itself.
I have tried resetting the IDE completely and also unregistering and re-registering all the templates. No luck.
Did you delete the Registry.TRF file? That’s cleaner than unregister.
You could try registering only the ABC templates, then open some example Apps and their windows to see if you have the same slowness. Just curious if you have the problem with that. If not then register all templates and repeat with examples to see if they changed to be slow