Possible bug in the ReadMe section
Did you test the specific example in the ReadMe section on how to use the DLL? If I’m not mistaken, the line:
arraysizes_init 1 3 ;
should be:
arraysizes_init 3 1 ;
Otherwise HAWC2 stops with an error!
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information