Running Word 2003 my mail merge fails if I use the Merge to Printer function.
It prints out {mergefield xxxx} for each item that should be merged. If I do
Merge to new document that works. If I do Check for errors and choose
Simulate the merge then I get no errors reported but it still fails when sent
to the printer. If I do either of the Complete the merge options it creates a
document that works properly.

The commands are built into a macro to make it simple for end users. Running
Mail merge manually gets the same errors as it does when the macro is used.

This same merge works properly from several other machines on the same
network running Word 2000, Word XP and Word 2003 SP2 using the same HP
LaserJet 2100.