simply when i open for example (GPSlog for Android - Alpha from your Forum) i have these cases :
-when not run it on emulator ,i can close it and open it without a problem
-when run it on emulator and close Basic4android ,when i reopen project i get the error message :
An error occured
Error loading file
The given key is not in the dictionary
I got this error after manually manipulating the layout on the Designer Scripts tab in the Designer.
I had a couple errors: 1) a view reference that ended in a dot (no property), and 2) a view reference with a misnamed property.
After fixing them the program compiled.
I had a project that experienced this and was in danger of losing the entire code base, since the b4a IDE would not load it, period. The fix was to delete the xxxxx.b4a.meta file. I do not have an explanation for why this fixed the problem, but...