Bug MIT APP Inventor: An internal error has occurred

I'm having a bug with Mit APP Inventor.
When I want to create blocks, Mit APP Inventor crashes!

Here is what is displayed

Why ? Thank you

Show your blocks on screen "LG", at least in LG.Initialize.

See also here:

sorry but i speak bad english, i don't understand your answer

Show you blocks in LG.Initialize:


Yes :slight_smile:
Thank you Anke


load your latest backup of your project an restart form there
see also http://twodogapps.com/?page_id=686#BackupWork


Trying to push the limits! Snippets, Tutorials and Extensions from Pura Vida Apps by Taifun.