Dave,

The first error states "c:\pbp2-60\16f1939.inc 18 : Unknown processor (16F1939)", so I checked in the PBP directory. I wasn't aware that there was another 16f1939.inc file in the MPASM Suite directory.

Quote Originally Posted by mackrackit View Post
Goto - program files - microchip - MPASAM suite- and look for P16F1939.inc
I checked in the computer with MPASM v8.15 and the file was not there. However, the file exist in the computer that has MPASM v8.60. Do you think it would work if I transfer that file over to my other computer?

Quote Originally Posted by mackrackit View Post
But again I have not had a problem with old code moving forward with the exception of having a label named something that is now a reserved word (LOOP for example).
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.

Robert