Updates to Portal 2 Authoring Tools have been released. The updates will be applied automatically when your Steam client is restarted. The major changes include:
Portal 2 Authoring Tools- Fixed crash that could occur when malformed brushes were saved in a map and then re-opened in Hammer.
- Hammer will now properly save maps after detecting and fixing malformed brushes. Fixes Permission Denied error some users were experiencing.
- Removed Lighting Preview option as this is not currently supported