Please use the portable version, so the ZIP file without dbg in the file name, this way it will not overwrite your working version. There is one thing to obey, if you don’t want Krita to constantly rebuild the resource database, you should create a backup of the file resourcecache.sqlite before you start the other version, you will find it in Krita’s resource folder. Additionally, I would do the same for your kritarc. That way you can exchange them before changing the version. But there is another alternative without that hassle and a 100% clean split of versions, create a second user account, and if you then create a link for the version in the other user account using the runas option, you can even run them simultaneously. This way I’m doing support for the forum, there were times I ran 7 and more “Krita’s” simultaneously as you can see here. You only need a decent amount of RAM … :
Michelist