CUSTERRNOTFND, Error mnemonic eeee specified in custom errors file is not valid for this version of GT.M
Run Time Error: This error indicates that the GT.M runtime did not recognize the error mnemonic eeee in the file referenced by $gtm_custom_errors.
Action: Modify the file so that it no longer contains the invalid mnemonic or set the gtm_custom_errors environment variable to point to an appropriate file.