Thank you,
but it does not help. I've also tried reinstalling B4A, upgrading JDK, updating SDK. But still the same :-( I only notice that the error will appear after adding stdActionBar (v.1.52) to the project. Interestingly, after removing the library, the error remains in the project.
I tried to move one of the projects to another folder. Now this file is not available when compiling:
C:\Users\Martin\Documents\B4A_2\vysilacky\Objects\bin\extra\res1\res\drawable-xhdpi-v4\notification_bg_normal_pressed.9.png
When I open the folder (C:\Users\Martin\Documents\B4A_2\vysilacky\Objects\bin\extra\res1\res\drawable-xhdpi-v4\), it does not contain any files.