This past weekend I was working with some fillable PDFs from the Department of the Army (United States). Bluebeam was able to open the PDFs just fine, but signing them caused Revu to crash on me and it would say something about the type of file being unsupported. I ended up just downloading Adobe to sign those specific PDFs, but I thought it was pretty interesting that Revu was unable to handle that task. Does anyone know what it is that makes the two incompatible? Or maybe there is something I can do to make it work?