Unable to compile this project

MIT App Inventor Help
1

For any reason App Inventor is not able to compile a project that has been unchanged and could be compiled a while before. There are a lot of similar reports unfortunately none of them has the same error message.
I can compile all other projects except this particular one.
The error message is as follows:
grafik

Can you please tell me, what Im doing wrong?

Thanks for your support
Reinhard Vogt

2

this has been asked many many times.
Your app icon format is not right. Change to png and not too big resolution.

3

Thank you, that solved my problem. Just for my information: I could compile this project earlier using the JPG icon. When did that change?

Thanks for your supprt
Reinhard

4

Three or four releases ago. It is a bug.