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

    Build error: ERROR: L257: UNKNOWN

    jbright_1593366

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

       

      C:\Keil_v5\C51\BIN

       

      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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