Error when making PS file

I am having problems converting FH MX files to Postscript files since I upgraded my PowerPC based Mac to a Duel-Core Intel Xeon Machine.

I get error message sometimes with large multiple page documents that read:

Could not complete your request because both source paths of a blend must be open or cloed.

There are no blends on any pages in the documents.

Any suggestions or has anyone else run into this problem?

Gary