DEBUGLOG
This specifies a location for the debug log output from the vendor daemon associated with this options file. Preceding the debug log path with a plus sign (+) character appends logging entries; otherwise, the lmgrd9.log file is overwritten each time the daemon is started. Note that this affects output from only the vendor daemon associated with this options file.
DEBUGLOG [+]debug_log_path
Example:
DEBUGLOG +C:\temp\debuglog.log
The DEBUGLOG option, when used, only appends entries to the user specified Debug Log and not to the lmgrd9.log.

If the path to the debug log contains spaces, then all of the path should be enclosed in double quotation marks.
Example:
DEBUGLOG +"C:\Program Files\temp\debuglog.log"