Failed to compile message, then compiles!

Bugs and Other Issues
1

I seem to be getting this message dialog come up when I compile an app on ai2 server:

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If I wait @ 10 seconds then this appears over it, and app can be installed/downloaded:

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2

Sometimes (not frequently) I receive the same wrong message.

3

Yes, I've seen this from time to time (quite rarely) and ignored it because the APK works fine.