Synology Cloud Station and the pesky TailCharacterConflict error

At my (previous) company we’re using Synology Cloud Station with 20 users and lots of files. One user was complaining that the folder names were renamed with this nice addition:

Company Name B.V._PC_Name_UserName_Jan-27-145750-2015_TailCharacterConflict

Everything I tried didn’t help: renaming the folder, deleting it from the server, resyncing, everything. Google wasn’t a big help either. The folder kept being renamed with this very irritating¬†TailCharacterConflict.

Until I saw the pattern.

You CAN’T let you folder name end with a trailing PERIOD. In this case, the folder name was Company Name B.V.

Changing the folder name to Company Name BV (with the periods) solved the problem. Insane, but true!