You might get the "empty trees" symptom after upgrading: when you
log into the Umbraco backend, you only see the top level nodes in each
section at the top ("Content", "Media", "Developer", etc.). This can
have a few causes:
After you downloaded the new release, the zip file was blocked by
your browser, this means that some potentially dangerous files are not
unzipped when you use the default Windows unzip utility. You can fix
this by right-clicking on the downloaded file, choose "Properties" and
disable the "blocked" checkbox. Now you can unzip the files again.
Permissions. Always double and triple check if the permissions were not overwritten. It happens, a lot!
The AjaxControlToolkit.dll is not necessary for
Umbraco 4.5 any more, but an old version that still is in your /bin
folder will cause the empty trees to appear, move it away.
4.5.1 Upgrade - Tree Problems
I made the upgrad to 4.5.1 and I have ran into two issues
1. None of my content shows up in the Content Section tree
2. Right clicking in the tree (any section) does not bring up a context menu.
Overall I'm stumped on this one. Any suggestions would be much appreciated.
From the following page, http://our.umbraco.org/wiki/about/roadmap/umbraco-45/upgrading-to-umbraco-45:
thanks for the reply. I ended up recycling the app pool in IIS and things "sprung back to life"
is working on a reply...