Hello, I'm new to the forums and mapping in general, but I've been doing fine, until I got this problem. Hammer editor simply won't launch. I can launch SDK all fine and dandy, but clicking the editor and hitting 'Launch' just causes it to think about it for a few seconds and then close. I looked at the task manager and that's pretty much what happens. The hammer editor process pops up for a few seconds, then closes. I already did the steam pipe conversion and got Source SDK/Hammer Editor to work, I have previously opened it up multiple times and have spent a good 10 hours making a map already, but now I've looked all over online and haven't found a solution. So far I have: Restarted Steam Restarted my Computer Reinstalled Source SDK, SDK 2006, SDK 2007 Redone the entire Steampipe conversion process. Please help? I really want to get back to making my map.