Unable to update ... MB has not been installed on this computer....

[demonsmaycry]

??????????????????

i cant install the patch. I try and retry to unistall and reinstall...and unistall..and reinstall..., i download last full installer BUT PATCH DONT WORK....help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

error message:
Mount and balade has not been installed on this computer. Please download full installer ecc ecc....

SO:win8

bye