I have a logmon profile that specifies the file to watch as:
*.log
If too many files (a couple thousand) match this expression, logmon 4.20 is crashing.
Logmon 4.10 does not have this problem.
Release : 4.20
Component : UIM LOGMON
defect
A fix for this will be included in the next logmon release past 4.20.
For now you can use 4.10 or adjust the matching expression to be more specific and match fewer files.