Here is my game path.
F:\FFVII\steamapps\common\FINALFANTASYVII
I intentionally quadruple checked all my paths. They are correct. I also followed these steps:
1. Go to C:\Users\<username>\AppData\Roaming\7thWorkshop and delete everything. Try to repoen 7th Heven. If it opens successfully, you will need to redo your Workshop -> Settings again.
2. Go to [gamedir]\mods\7th Heaven\temp and delete all the .iro files (they will usually be 0 KB in size). Try to reopen 7th Heaven.
I get that error message when I attempt to launch. I'm using launcher ver 1.5.6.0 and the launch order is correct. I patched the game successfully. I even restarted from scratch. Any ideas?