I have/had the latest build (3/16) and it did not work. I had to roll back to an earlier release, but basically the problem was this:
We have a dropdown that causes a postback for an updatepanel. Cuteditor reloads with the async postback but the button bar across the top never shows up. I was getting a javascript error - something like editor.getproperty did not resolve properly. It was passing in the variable "FullPage" to the method call. I tried defining this property in the control instead of taking the default and it didn't seem to help.
Sorry for the sketchy details but I've already spent a bunch of time on this bug and don't have more to reproduce it for you.
It would be very handy if you had a link to a "stable" version of the control, or archived versions. I only see a link to the latest and greatest - maybe I'm missing somthing. I'm using a 6.1 version that has a bug with pasting from word/excel so I get to choose the bug that goes live.
Hope that helps.