How to go back to the previous citra version?

Hi guys, very simple.
Yesterday I saved my game with “save state” and today I updated citra into a new version and can’t open my saving so dumb I know. Can anyone explain me how to go back and save my loading, it’s so frustrating to loose everything like that :frowning:

When I try to load my save it says “unregistered class”

At this point I can’t even post my log, the only thing I can do is pressing “OK” and then citra closes.

citra version is citra nightly 1844

In order for us to provide better support, we need to see the log generated by citra. This guide will walk you through how you can obtain the log file: How to Upload the Log File

Have the log folder open in the background first and then when Citra closes after you click OK you can upload the log.