I have attempted to update a 2.0.8 installation (well, a copy of) to 2.2.9. I followed the general directions (updating all packages to the latest versions, flush cace, flush sessions & logout, trash the contents of the core/cache/ directory, etc.
It took a bit of experimenting to come up with a decent method of copying files from the upgrade directory into the installation directory. My first couple of failures appear to have been because of improper merging (e.g. replacing a directory and its contents with the upgrade directory), but I figured out how to use ZIP & UNZIP to solve this.
Now the upgrade appears to have worked, but when I log into the manager, it does not display properly and is unusable (see attachment). Before anyone asks, yes I did clear my browser's cache — multiple times. The site itself (i.e. front-end view) appears fine.
My browser is an up to date release of Firefox running under Linux Mint. The MODX site is hosted on a Linux server running Apache. When I use the Firefox "Error Console", there are pages and pages of dropped CSS declarations and 3 probably disasterous error messages at the end (I don't know how to save the console log and my attempts to take a screen snapshot failed). The 3 messages are identical and read:
TypeError: b[e] is not a constructor
http://testbed.teachbridge.com/manager/assets/ext3/ext-all.js
Does anyone know how to get this upgrade to work. I can restore the copy of the site (it is the one pointed at by "testbed.teachbridge.com". The live site is "teachbridge.com" and there is a test copy for the site developers.