I develop B4A in Win 7 in a VM on Parallels Access on Mac.
I have set up Parallels Access in Convergence mode, meaning the Win 7 Users folder is mapped directly over the Mac OS X user's folder on the HFS+ partition, not as a separate users folder in the VM's NTFS Disk file.
As a result Windows sees Mac native system files like .DS_Store files. B4A incorrectly lists these in the Logs window. This isn't so much a bug as a suggestion for ease of integration in VM environments. Realise this is a niche situation thought, amongst the community.