To compile this project to work with your 2005 FRC (18F8520) system do the following: 1. Select the correct device from the MPLAB IDE. Configure->Select Device->PIC18F8520 2. Replace the library file with the appropriate one. Remove the FRC_Library_8722.lib file and replace it with FRC_Library_8520.lib or Remove the FRC_alltimers_8722.lib file and replace it with FRC_alltimers_8520.lib 3. Remove the 18f8722.lkr file and replace it with the 18f8520.lkr file 4. Rebuild your project and download the HEX file to your controller.