Deleting tuplets

Hi,

I'm loving the program, but having major trouble in just one area : Tuplets

I can create them, but then cannot edit them, I just end up with a note and a set of bracketed rests which are impervious to note entry or editing

In addition, and most frustratingly, I can't delete them. Even nuking the whole measure doesn't get rid of the varmits. They just hang around there, above the stave, screwing up note entry indefinitely.

Am I missing something, or is this a bug? I've scanned through the help forums and the manual, but to no avail.

Using the latest windows release (downloaded 30/10/08) on XP