Created attachment 10083 [details] corrupt.pcl The file appears to be corrupt exhibiting partial escape sequences but it renders reasonable well on the HP 4700.
fixed with: commit 216b2692178e1113ab7252bf700cd980f5939a89 Author: Henry Stiles <henry.stiles@artifex.com> Date: Tue Jul 30 11:48:07 2013 -0600 Fix 694434, fix incorrect parsing of corrupt file. Invalid PJL was not properly ignored upon parsing. There is a residual problem with this bug that causes an intermittent blank page. This is a known issue for which we don't plan to try an emulate HP - see 693608, it is unclear when pages should be fed when duplexing commands are set.