Can not open log file. Reason : aa....aa

An attempt to open the log file has failed. This message is output to the event log. Note, however, that it is not output when full-reliability has not been granted to the TP1/Connector for .NET Framework assembly.

aa....aa: Cause of the error

S: Continues processing without outputting the log.

O: Eliminate the cause of the error based on the information shown for Reason, and then retry.