I tried programming the following code onto two different brand new ICs.

Code:
loop:

high portb.4    ' turn the LED on
pause 500       ' wait 500ms
low portb.4     ' turn the LED off
pause 500       ' wait 500ms
goto loop       ' repeat
I'm getting a popup that says "Device not blank. Program anyway?" and when I click yes, I get the error "Code programming error at 0000."

The program is compiled for the PIC16F57 and I made sure that I selected the correct IC in the programmer. I'm bummed.