Restoring a Rig Manager Backup

Hi,

quick question here, as I couldnt find any info on this. I had to reinstall my windows OS. I did a Rig Manager Conent backup before that. Now I restored it, but no rigs from the back up show up in the Rig Manager. What am I doing wrong? I am grateful for any help.

Here's what's very weird and worrying if I restore an older backup it works, if I restore the last backup the RM just doesnt react. Nothing happens.