Unexpected file format 2021

Helloo, I see many people with the same problem that i have, Its “unexpected file format” for SKP 2021, is it posible for someone from skp to help me? im really nervous, and keep reading all this forums, seems like the only concrete solution is from skp developers. Hope someone can help me im desperate, this seems to be the only way. Thank you in advancee anyonee!

here is a link to a drive with the file:


this is a job for @colin


@colin plss helpp