What do i need to backup?

Ok with all the time spent on getting setting for each type of filament and speeds to get good prints etc..

what do I need to backup if my PC dies and I need to create another host PC?

Slic3r stores data in home/AppData/Roaming/Slic3r if not told otherwise.

CuraEngine has a folder in Repetier work directory.

Host settings are in registry HKCU/Software/RepetierHost

Thanks ..

May be a function to add in the future Backup all :)