_Files reserved word? with Next Generation client

Thanks Glen.   The issue I'm seeing is specifically with using the word "Files" or "File" after an underscore following any characters

In the Next Generation client:

This folder works:    _files

This folder fails:   My_files

But when using the origional Groove client, both names sync successfully.

This came up as we are having users upgrade from the old client to the next generation client, and some are reporting that folders which have always worked with the old client are now failing with the new. 

However Vasil pointed out that "files" is a documented reserved word in the KB he noted above, when using the old client.  This is opposite to what I've seen (works in the old client but not in the new), but clearly its a combination to be avoided either way.