reluctant Acrobat

Niels,

Try using the manual Print to postscript route and distill. If there are FM issues, this may show more clearly where they are occuring.

The .tps files left behind may be suggesting that the Acrobat installation may have an issue. You can always try to use the Acrobat Help > Repair option to ensure that side of the coin is ok.

> A .book that has saved as .pdf without any problems ... now hangs;

How do you know it's hanging, rather than just taking a long (and possibly growing) amount of time? How long are you waiting, and how are you terminating it?

> ... FM10 on Windows 7 ...

Win7 32-bit or 64-bit?

How large are the .tps files getting?

I don't know what the FM10 limit is, but there were historical issues at 2GB (now fixed) and I've tested FM9 to above 4GB, but rendering time is glacial.

> .. .tps files are being left behind after distilling has finished.

Any clues in the log file?

One extremely unlikely degenerate case that can cause this is if the document is importing itself as a text inset, possibly in anchored frame where it might be hard to find. Fm does not detect this sort of recursion. Both the .fm file size and the rendering time will grow every time you open it. I have seen this happen as a result of file corruption, although it could be done by accident.