19,1 iMac, Monterey 12.5, XnView 1.0:
If I boot up my iMac, open XnViewer 1.0, Monterey Finder hangs causing me to reboot. I'm going back to a previous version XnView .0997, or further back until a version works.
I deleted version 1.0, and installed .0997 XnView MP. Everything works perfectly.