The only other thing I can suggest is testing the printer with other programs (Rules out the printer as a problem) and then another pepakura file (Rules out problems with the program itself). Printers don't know what size paper you have used, so it will either fit perfectly or have a blank space at the bottom depending on whether you have used A4 or Legal (Most files are set up to use A4 size). if it is able to print anything at all, it can print the rest of it. Either way, this information could help find an answer. If it is taking the expected time to print a page, but showing nothing but the page number, it may be 100% transparency, or the line colour may have changed to white or 0 thickness (Again, I don't think these options are possible). it may be trying to 'print selection' where noting is selected (I'm fairly sure this isnt the case, but I coulnt think of a better example). you may be able to narrow it down by the time it takes to print: If it just spools the card/paper right through until it gets to the page number, then it is definitely isnt 'trying' to print the lines, ie.
