If not, try something like 7zip, if so try using the windows native zip (explorer)
Before leaving windows I was using 7zip and it worked great for the oxps
"I'll laser the mark all while munching a fistful of popcorn." - Markgräf von Ededleen,Marquess, Brutal Great One, Assassins' Guild Exterminator
--------------------------- At the helm of the Caduceus Omega,'Murderous Morrígan'
Hasa rquires plist file in there, is that anything to do with it? Think im just clutching at straws here
I'm still not sure what OXPs you're having trouble with. I would check the folders in the addons making sure that they have the .oxp extension (and all the necessary files), then follow El Viejo's advice and re-unzip the OXP if you're still having trouble. After that if you still have problems, try re-downloading the zips altogether .
"I'll laser the mark all while munching a fistful of popcorn." - Markgräf von Ededleen,Marquess, Brutal Great One, Assassins' Guild Exterminator
--------------------------- At the helm of the Caduceus Omega,'Murderous Morrígan'