Thats pretty odd. I've had the editor slow to a crawl after a long programming session, but never plain crash.

The only idea I have is to write down all your devices, then start a new file and complete step 1 - create devices. Next, right click on each device and select "import", and import them from your other file. I would do 3 or 4 devices at a time - then upload, till you figure out what device is crashing - or until your done.

That method should keep all your macro's intact. The key is to import the base devices first - ones that don't have macro's on them like TV and Receiver, then import the devices that rely on the others for their macro's.

If that made any sense...