luigistyle said in how do I solve this error?:

That's either not true, or your files are corrupted. Double-check that the folder is selected correctly and run piry in your game folder

ok, i will search to see more about this error and use piry

HannesC said in how do I solve this error?:

Click game settings beside play on the launcher, and select your correct bo2 folder.

it's in the correct folder, but the same error appears