Reproduce:
* Create a new page
* Select its page-title in the left-hand pane under: "Site Content and Structure".
* Bring up "Page version history" in the left-hand panel.
* Check 1 or both checkboxes
* Select the only revision in there
* Error in main pane on a javascript dialogue box: "There has been an error"
Please make this go away or provide a more useful error message to the user.
Setup:
* SS v2.2.2-rc2
* Linux (FC5)
* PHP 5.2.5
* Apache 1.3.33
* Firefox 2.0.0.13
Cheers :-)