Another Small update

-Added cycle fabricator, land factory and air factory hotkeys -Detect missing or bad openGL drivers and show a message with info -Fixed crash from out of range keyboard input -Switching to advanced skirmish not transferring AI difficulty -Crash details show in popup (helps modders if they make syntax errors) -More reliable shutdown after exception -Fix AI showing as disconnected -Fixed sandbox editor not showing till units are deselected (due to builder being auto selected)

This update should be compatible in multiplayer with the old version.