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Altera_Forum
Honored Contributor
8 years ago.stp files are not "part" of the .sof. The .sof includes the bitstream for including a Signal Tap instance when you program the FPGA. The .stp file is used to configure (before compilation) and control (after compilation and device programming) that instance.
So program your device with the .sof using the programmer or the JTAG configuration section of the .stp file. If the Signal Tap instance defined in the .stp is present in the programmed device, you'll see in the status at the top of the .stp file that you are ready for capture.