I feel somewhat embarrassed, because I commited a stupid beginner's error, when creating hastiiy a new database after not having used Filemaker for a long time.
The database is stuck in an eternal loop and I did of course not include 'Allow user abort' or any other precautionary measures.
The only solution seems to me to edit the programme outside FM with an editor like BBEdit, but that doesn't work.
Most probably the best solution would be the script debugger which is part of FM Pro Advanced, but I only have FM Pro 11.0v4.
Does anyone have another suggestion or do I simply have to update to FM Pro Advanced ?