The InsectLoader hack works just fine in multiplayer. You only get the weird issue where your camera scroll breaks in single player. I've never had it crash as I complete a level though I can't confirm it doesn't happen to other people. @RaTcHeT302
This is in regards to these edits: http://pcgamingwiki.com/w/index.php?title=StarCraft&diff=147092&oldid=146469
http://pcgamingwiki.com/w/index.php?title=StarCraft&diff=147125&oldid=147121