Thanks guys. I have ruled out my programmer, crystal, etc. due to the fact that I can program and run Steve's USB demo program no problem. In fact what started all of this is that I tried to add a serial port connection to his program to see if I could extract data via the serial port, and put it out the USB port. I did copy and paste from Steve's Pic Multicalc program. If I set my OSC define to 20 Mhz, and set up the programmer for HS instead of HSPLL, I can get 38400 out, and if I insert a 16f877 into the same board I can get 38400 out. It's just when I set the OSC to 48 Mhz that I get the argument out of range warning. I'm using a MELABS Labxusb board, in fact I have two of them, and I have tried both. I'm using MELABS USB serial programmer, I have the latest patches installed from their website, I tried the USB programmer Beta version as well. I even tried installing all of the software on a different PC. What is weird is that I can burn Steve's USB demo ok, and I can do the USB mouse demo no problem, or like I said, I can drop down to 20Mhz ok. I'm still not ruling out my doing something stupid............

Keep warm in Montreal and North Dakota. It's getting colder here in Pennsylvania, but Saint Patty's day is coming!

Many thanks again,
Jerry.