Before login out of the session, move the wbar home directory aside, so that it be forced to be recreated. It can be in /home/itsgregman/.wbar, or maybe in /home/itsgregman/.config/wbar : locate it, then rename it ".wbar-backup" or if it's in .config, rename it "wbar-backup".
Then restart the session and try again.
If you have done changes in it to tweak, the tweaks will be lost as being in the "wbar-backup"... if the problem does not come from there, then you should restore the backup by renaming it as it was (after erasing the new one). Then in console:
$ killall wbar
and when it comes to messages "3 tabs to choose from 1st force shutdown now 2nd wait for program or 3rd cancel shutdown." then choose *cancel shutown" and look what messages you get in the console where you start wbar from.
Sometimes it helps figure out the origin of a problem.
Good luck !