Usually the leftbar and rightbar errors are from using a theme that is not compatible or that you have outdate files in your install for TP. This could be caused if the install didn't replace the files with the new files for some unknown reason.
What theme are you using? If you're using a custom theme, make sure if there are any TP files in it, that they are up to date. If you're not using a custom theme, upload a fresh set of TP files to the default theme.