Should the PCL5 interpreter detects an invalid sequence, it just ignores it, after which you can carries on the most effective it might, but no error messages usually are created - exceptions to this are things such as 'Away from Memory' errors, but these may take place with valid streams. http://hpprinterphonenumberhelp95173.bloggerswise.com/904656/a-simple-key-for-hp-printer-pcl-xl-error-illegalmediasize-unveiled