Restoring backup on fresh ROCK install

My back up is done on Roon version 1.5 (323) and last version available of ROCK is 1.4 (297), impossible to restore the backup :frowning:

Any suggestion ?

@David_Ghidoni : This was the solution for me.

About what I know, version 1.5 is not existing for ROCK

I found the solution,
Reinstalling operating system solved the problem.