Anaconda fail to mount downloaded stage2.img from the latest Rawhide with error message (photo image attached): Error mounting /dev/loop0 on /mnt/runtime (Invalid argument) There are already closed loopback bug reports #432840, #437009, #436855, #439642. But it seems that this is another bug (why not use simple 'mount -o loop img dir'?)
Created attachment 302818 [details] Photo of the error screen
This is odd, because none of the error message strings at the end of your screenshot exist in anaconda anymore. Are you sure you're using the latest rawhide?
I'm in sync with download.fedora.redhat.com. I've got update of anaconda at Apr 20 (anaconda-11.4.0.73-1 has been deleted). I'll retry and report back.
Current Rawhide works Ok. The bug could be closed.