Hey there, I and other users named boreas3 and Bill101 have a similar issue with Formamorph 1.2.0, after letting it load, it just turns white, no UI and you can't do anything anymore.
A rough way to fix it sofar is to completely delete all game date in AppData.
Which is bad, since you lose all saves and custom scenarios as well.
My theory:
Could be a tainted world file or something from the "Discover Worlds" tab.
It happened to me after i looked through and Downloaded a few new worlds in the World browser...
I did love to know where all the world's form Discover world Tab are saved...
And what kind of comparison is used on them so i can sniff out myself what world Fed it up.