The 7.3 upgrade/install doesn't automatically upgrade the auto close service. If the 7.2.6 version is running on a 7.3 system you will see an error in the application log that says it can't find rngdef in the module definitions.
- Backup the touchpaper.integration.pollservice.poll.exe.config file from the original installation.
- Uninstall the 7.2.6 version
- Install the 7.3 version
- Once the 7.3 version is installed, copy the touchpaper.integration.pollservice.poll.exe.config file to the newer 7.3 folder
- Lastly, update the file so that it points to the correct directory
If you run in to this Problem please log an Incident with your Support provider quoting reference 4329.