Follow these steps to resolve this problem:
1) Open services.msc and stop the Dell MessageStats Scheduler service
2) Find the old installation directory. If you are upgrading from 7.2 or earlier this should be the default installation path:
C:\Program Files\Quest Software\MessageStats
2) Locate the tasks folder and copy it.
3) Paste the tasks folder into the new installation directory. If you are installating 7.3 or a newer version this is the default path:
C:\Program Files (x86)\Dell\MessageStats
4) Re-start the service (Dell MessageStats scheduler service)
5) Check and see if the tasks are now running.