With the recent update to v1.18.0 this plug-in stopped working for me. The special page doesn't load and the description-field contains just: <RecentChangesCleanup-desc>
Topic on Extension talk:Recent Changes Cleanup
Stopped working with an update to 1.18.0
Looks like the recent updates have broken a number of extensions (1.17 got rid of a certain file that people were using). I'll try to fix this and will come back if I find a solution. I'll post a message on your talk page if I find a solution.
Ok, I updated it for 1.18, should work now.