Sets a file name for debugging internal run-time information. The file path supplied must be valid. The log file has a maximum size of 1 MB. When the file reaches 1 MB in size it is moved to FileName.old and a new file is created. Setting the file name to an empty string will disable debug logging. This function is not thread safe, and should only be called before calling connect on the instance. This should be only used for support purposes to provide debug information to the development team at iNTERFACEWARE.