This is an error message with its own error. It says "source paths of a
blend must be open or closed", but what it should say is "specified font
cannot be identified".

Judging from reports on this forum, this message only occurs under Mac OS
10.5 (Leopard).

Here's a previous forum post that may or may not help you out.

> ColdJelly
>
> Mar 17, 3:59 pm
>
> i was getting the same error message -- "Could not complete your request
> because both source paths of a blend must be open or closed." working in
> freehand mx 11.0.2 and leopard 10.5.1 (with suitcase fusion 12.1.7). i tried
> every suggestion i could find on this board and other places and nothing
> worked. however, i did stumble upon a solution (other than turning all type
> to paths) that has worked every time i've run into this error which, i
> believe, is caused by fonts no longer auto activating in freehand while
> running leopard. if you're experiencing this error, double check that all
> fonts used in the document are open in your font program. if all are open
> and you still get the error, do a "collect for output" which will collect
> all elements used in the document. once this is done verify that no unopened
> fonts are used in your document. every time i've done this i've found a font
> or two that was being used that i was unaware of. once i opened the font,
> the document pdfed without issue. hope this helps. best of luck.
>nick