ID:268020 Signal Tap File contains an instance created in a newer version of the Quartus Prime software. You must use a newer version of the Quartus Prime software to open this file.

CAUSE: You tried to open a Signal Tap File (.stp) that you generated in a newer version of the Quartus Prime software. However, this version of the Quartus Prime software cannot open it.

ACTION: Click OK to close the message box, and use a newer version of the Quartus Prime software to open this file.