Printing to my Laserjet 1100 stopped working following a recent pkg upgrade. Printouts would produce nothing but "%PDF-1.5" at the top of the page. In some cases, such as printing a test page from localhost:631, the print job would remain in the queue after it was finished. Setting CUPS LogLevel to debug did not reveal any errors. The following fixed the issue: pkg delete '*hpijs*' cd /usr/ports/print/hpijs make install
It's possible that you had a dirty repo (fixed with pkg -f upgrade). In any case, this port is not maintained and this particular package was probably rebuilt many times in the last 2 months. I'm going to close with "unable to reproduce". I don't know what else could be done.