Don't know if anyone can help me with this or not.

I have a Userform on my spreadsheet for inputing "comments" into. This form
also has a variety of function buttons on it which work just fine, with the
exception of 2 of those buttons (Post Comments, and Update Comments).
Whenever I attempt to "click" on either Post or Update Comments, I receive
the following popup: "Run Time Error 6028: The Range Cannot Be Deleted". I'm
not exactly sure what this message means, or how to rectify the problem.

If someone could give me an idea of what I need to look for in order to
attack this problem I would appreciate it.

Thanks,

Dan