Clear SkyDrive Pro Cache
If SkyDrive Pro stops working
As for now, the only solution is to clear the SkyDrive Pro cache, and re-sync your library. So you will lose all settings.
To clear your cache, close all your Office processes like groove.exe (which is SkyDrive Pro), msouc.exe, msosync.exe, office library sync,…
Browse to “C:\Users\%username%\AppData\Local\Microsoft\Office\Spw” and delete all the content. (you will see that this is all related to groove and spw = SharePoint Workspace). Next, go to “C:\Users\%username%\AppData\Local\Microsoft\Office\15.0\OfficeFileCache” and also delete all content from this folder. This is where all the caching from your files are stored.
After you deleted everything, you should be able to start SkyDrive Pro again (using “C:\Program Files\Microsoft Office\Office15\GROOVE.EXE“).