I have a Fiery and D125. It is printing booklets with covers and inserts using the paper catalogue. If the job has a problem/jam and he restarts the job the following happens--after 5 sets of booklets the Fiery starts inserting random pink sheets and as the job progresses more of the pages are substituted with pink sheets until all the pages are printed on pink paper. (Pink paper is used for one of the pages in the job originally.)
It does not happen if the job runs without jams.
We also had a job that printed in reverse ie white text and black background.
We have reloaded and patched the Fiery several times. This Fiery only has 2GB of memory. Could it be a memory problem?