Guys,

Thank you all for your comments.

Quote Originally Posted by mister_e View Post
Download latest MPLAB, and set MCS to use MPASM in
Program File \Microchip\MPASM Suite
Then just specify which PBP version you want to use to compile... you're done. MPASM has next to none to do with PICBASIC PRO version.... but New PIC support.
The next quote is from the MELABS webpage. http://melabs.com/support/mplab_old_versions.htm

PBP versions PRIOR TO 2.60 are compatible with MPLAB versions up to 8.15A. If you have MPLAB 8.20 or later, you will need to either downgrade to MPLAB 8.15A or upgrade to PBP 2.60.
The issue is that if I upgrade MPASM in my laptop all my PBP 2.50 code (specially the USB programs) will be useless. I guess that eventually I will have to change my old code so that it is compatible with PBP 2.60.

Robert