Plutonium

Plutonium downloaded on Mac and running through cross over . When I start up t6 zombies and multi I get the code_pre_gfx_zm error. The fix it says on yalls website is to “repair integrity of file thru steam “ but the problem is I don’t have it on steam . And the download from PLUT way back machine didn’t come with any exe for, multi or zombies so it won’t let me add a non exe to steam. Only all the other files. Thanks again yall !

samiernique13p same !! Any fix?!