Upgrade from 2.0.11 to 2.1 led to session errors

[wicked1]

Upgraded to 2.1 today and was planning to work on a theme for my site.

Everything seems to be working fine, except my administration error log is showing a ton of errors about sessions.

Unknown: Failed to write session data (user). Please verify that the current setting of session.save_path is correct (/tmp)

Unknown: Session callback expects true/false return value

session_regenerate_id(): Session write failed. ID: user (path: /tmp)

session_destroy(): Trying to destroy uninitialized session

It looks like I'm missing a tmp folder but I'm not sure where it's supposed to be (the upgrade package didn't come with one that I can see) and I don't see a place in the administration center to adjust the path for the tmp folder. I'm not sure what the other 2 errors mean.

I'd appreciate any guidance to getting this fixed.

Thank you in advance for your help!

[Illori]

did you download 2.1 from github? if not please do and try again as there have been many fixes since beta 2 was released.

[Oldiesmann]

This has just been fixed in 2.1 on GitHub.