Maplestory won't turn on...

Every time I try to turn on Maplestory, my anti-virus (Sophos) tells me that it's a suspicious file of type "Sus/ComPack-C". Then a window pops up that says "Windows cannot access the specific device, path, or file. You may not have the appropriate permissions to access the item." Which is weird, considering I have an Admin account.

Is there any way to fix this? (No, I can't get a new anti-virus. So please don't suggest it) :f6: