I've developed an information panel that uses a multi-selection list box to populate a lookup-column in a SharePoint document library. It works great until I try to use it against the 'Project Documents' library that comes with the 'Microsoft Office Project Workspace' template---when I try to use it there, the checkboxes are disabled and cannot be checked or unchecked.
The weird thing is that I *can* make selections using the default SharePoint upload/tag/check-in web page! I can upload, tag, and save, say, a Word document, and then when I open it in Word, the correct list items are checked in the list box and everything---I just can't uncheck them (or check others)!
As an additional clue, the info panel also uses a multi-line textbox tied to the standard Keywords tag column---this textbox is enabled in the info panel, it's just the list boxes that aren't.
Can anyone explain what's going on, and how I can get around it?
Thanks,
Joel