Hey guys I have BG EE fully patched, but for some reason when trying to install Siege of Dragonspear it tells me my game isn't updated :/ Very annoying. Tried uninstalling then reinstalling, nothing. Any clues?

If you're downloading it from your GOG library, then you shouldn't need to be patching the game. Make sure you've download version 2.3.67.3 (A) for both BG:EE and Siege of Dragonspear.