Error: Can't run SignalTap II Logic Analyzer -- SignalTap II File is not compatible

Hi Alexhugo,

Typically, this error occur when you have modified the STP that require recompilation but you did not recompile the project or you did not program with the correct SOF which matches with your STP.

Can you please try to delete db and incremental db folder and recompile the project with the STP see whether it helps or not? Make sure you choose the correct SOF before programming FPGA and running signaltap.