Android Question exoplayer

[Laurie]

Generating R file. Error
invalid resource directory name: D:\Dropbox\Basic4Android\Examples\ExoPlayer\B4A Samples\Objects\bin\extra\res1\res/drawable-anydpi-v21
invalid resource directory name: D:\Dropbox\Basic4Android\Examples\ExoPlayer\B4A Samples\Objects\bin\extra\res1\res/values-b+sr+Latn

The files exist - but what's the problem?

 

[DonManfred]

Are you using the B4A SDK MAnager? Are all items uptodate in the Manager?

Tip: Do not use Dropbox to store the Project. Copy the project to a normal folder on your pc and try it again here.

 

[Erel]

Are you using the B4A SDK MAnager? Are all items uptodate in the Manager?

That's the correct questions. This error is related to old build tools.