No I haven't tried a different computer yet. I just can't figure it out. I have lots of other sites running off the same WAMP server on my computer and they are still all ok for inserting dropdown menus. So does that discount a caching problem?
I did a search on EditableMultipleOptionField but the results produced nothing. Could it be something with my database since that's about the only thing that i haven't replaced. I would hate to have to start from scratch and build my site database from the beginning.
Maybe a file was changed when i installed the trunk version of userforms. I regret doing it now... it's caused nothing but frustration. Ahhhhhh!! I've spent HOURS trying to sort and am nearly ready to give up. :(
So i re-installed onto a live server and transferred all my files and database across - SUCCESS!! Can't tell you how relieved I was. Still not functioning properly on the local WAMP - still have no idea what is going on there. But at least the live version is all ok.