1 2 Previous Next 17 Replies Latest reply on Mar 14, 2019 11:12 AM by DheerajK_81

    Build error: ERROR: L257: UNKNOWN


      We paid for the professional compiler CA51-LC-ND and I put the path




      in PSoC Creator 4.2's Options → Project Management → 8051 Toolchains


      I set the Build Settings to DP8051 Keil Generic.


      When I try to build a project I get the error message


      *** ERROR L257: UNKNOWN

      The command 'LX51.exe' failed with exit code '3'.


      What does that mean?

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