By mistake, when I was changing the Default Autotype String, I left a backslash ( \ ) at the end of the string. Following this, the database saved ok and I was able to re-open the database for a while, but when trying to open this database with Password Gorilla (on a MacBook Air), I received an "incorrect end of string" error message and the database would not open. After a bit, I found that I could not open the database with Password Safe either: I received a "corrupt database" message.
So, I reverted to a backup copy of the database and began to run experiments - that is when I discovered my error, and adding subtracting the incorrect backslash reliably caused the database to fail or work with Password Gorilla.
Now that I know, I will be careful but, it would be good if Password Safe would check for incorrect Autotype String syntax and warn the careless user (such as myself).
Many thanks for your attention to this problem!
Robert C. Abbe