ID:268065 Unexpected JTAG communication error

CAUSE: You tried to download a design in the Signal Tap Logic Analyzer. However, the Signal Tap Logic Analyzer cannot communicate with the JTAG chain. This message can occur because the board is not powered on, the programming hardware is not connected, there is a problem with the circuit board, or you did not download a design with the current SRAM Object File (.sof).

ACTION: Make sure the circuit board is powered on and programming hardware is connected properly, and download the current SOF.