Was this a new install or an upgrade?
If it was an upgrade, did you do a MAJOR or MINOR upgrade?
If you did a MAJOR upgrade, did you UNINSTALL and REBOOT the server prior to installing the new version?
Remember, with MINOR upgrades, you need to stop the SmarterMail service and IIS, run the upgrade and restart IIS - the service will restart itself as part of the upgrade process.
With MAJOR upgrades you always need to UNINSTALL the old version, REBOOT the server, to unlock any locked files, and then install the major version upgrade. Once the upgrade is completed, you need to DISABLE the built-in SmarterMail web server and run under IIS as the SmarterMail web server is designed only to be used for installation and initial setup.
Either way, you can probably resolve this by uninstalling, rebooting, and reinstalling SmarterMail.
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