It seems you have a non-number string in there. Check the dat file.
Check if there are letters among those numbers.
This problem occurs when you enter a letter in a number field.
I added some checks in the new version to avoid this problem
If thisdoesn't help you can send me your dat files and I'll check them
You can email me at JessicoChan@g***l.c*m (masking from spam bots. it's gmail)
Okay, I checked it.
It seems like your files has been corrupted completely. You will have to re-add everything. Just copy your resources to a new project and then add entities with the same names. The editor should load existing resources automatically.
