Thanks for the dump, the fix will be available in the next 7.6 version that comes earlier next year. If you need the fix asap then I'm afraid you need to contact support so the fix would be included into the next 7.5 hotfix.
Could you please do one more thing please - check the content of the following registry branches
HKEY_LOCAL_MACHINE\SOFTWARE\Altiris\Altiris Agent\Event Logging\LogFile
HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Altiris\Altiris Agent\Event Logging\LogFile
They both should exist and they are mirrored, i.e. if you modify a value under one key it automatically changes under another.
If they do not exist then you're probably running the standalone inventory without SMA agent? Is that the case?
I suspect the second registry branch is missing on your machine for some reason. If it is then you can manually create it to match the first one, after that the problem should go away.
The usual content of these branches is below:
[HKEY_LOCAL_MACHINE\SOFTWARE\Altiris\Altiris Agent\Event Logging\LogFile]
"FilePath"="C:\\ProgramData\\Symantec\\Symantec Agent\\Logs"
"FileName"="Agent.log"
"Severity"=dword:00000007
thanks!