Help- MAC Having Trouble with file dsetup.dll

[Boots7]

I'm trying to run the game on a Mac with Sierra. I've downloaded and installed the game. I've deleted all the files that need to be deleted and changed the mode to Windowed. The only problem I'm having is with one file from the updated P99 V53 folder, dsetup.dll.

When I have all the files except this one, it says my spell files are out of date.

When I do add this file, the app won't even open, it will just bounce twice on the taskbar then dissapear.

Does anyone have any advice? Thanks.