As you may have gathered, the Contribute section of Box Tunnel is under construction. This is because we are implementing a slightly more advanced system of AVS preset contribution and this takes time.
We apologize for any inconvenience this may have caused. For now, however, you'll just have to contribute your presets the old fashioned way...
Attach the AVS file(s) (with the .avs extension) to a standard email.
2. Enter 'Preset Upload' in the subject line. Address it to firstname.lastname@example.org
3. In the email body give descriptions of each of your AVS presets and other important notes.
Want more info? Refer to the Box Tunnel Info section.