Good question! I went over the docs. Three things caught my attention. First, the author mentions 2 versions of PDF::Reuse---1.4 and 1.5. Also, he developed this on Win32 and Abobe, and it's missing meta data and info or hasn't been incorporated into the module yet. Missing items can be added with a batch routine in Adobe. That could be a problem, esp. if you're on a linux box. Second, the author mentions that the mandatory components, prFile and prEnd, must be installed and to double-check that they are indeed working. I would use pmtools to check that out. Basically, retest the module to make sure it is working. Third, he mentions a very specific order in using the components. In this case, you are using prForm; so, the order is prSinglePage, prForm, and prPage. I would suggest redoing your script and start with prSinglePage. If it's still quirky, then prForm, then prPage. He gives each component alternative methods. You might want to play them. All in all, this module appears to me to be rather quirky, but it works---just expect the unexpected. I would try to use prSinglePage instead of prForm.