Elara downloaded it. Inside were three files: MCP2515.IDX , MCP2515.HEX , and a README with one line in bold:
Why a Better MCP2515 Proteus Library is Essential for CAN Bus Simulation mcp2515 proteus library better
Once you download a superior MCP2515 library package (which typically consists of .IDX , .LIB , and sometimes .DLL files), follow these steps to install it: Ensure the software is completely closed. Elara downloaded it