So, you are saying that the code with a 18F4550 and a USB interface that I wrote in PBP 2.50 and MPASM v8.15 should work in PBP 2.60? I thought that the whole USB handling changed with PBP 2.60.
I am pretty sure even the USB is backwards compatible, but I would ask Darrel to be sure. I do not have a way to test my old USB code, my old files and hardware are at a different location. I do not remember a problem during the last upgrade, but anything I had in progress I changed to the new way because the new way works better and takes less code space.