[Scribus] Linked frames - is there a limit?

[Robert R. Di Giorgio]

I'm doing a 24-page booklet that needs a number of linked frames, I have 
about 6 in place (hard to tell exactly, because the link marks are 
unpredictable).But now it won't accept a link between my next pair of pages.

Scribus 1.3.0, FC4

Thanks