cannot publish at all

Hello,

i recently upgrade to V 2.2.2 and when i click on publish, it doesn’t publish at all. i have clear my cache and cookies. the post goes into draft instead.

i notice when i click on the to nav bar for Users, i get this error message:

Fatal error: Unsupported operand types in /home/fusionrain/blog/wp-admin/users.php on line 55

thank you.