If you have registered your FileRun while running from one domain and then they to use it over another domain, you will get the error: This software application is registered to a different server hostname
To solve it, log into FileRun over the old domain, go to FileRun > License.
Then on top right, click on the “Unregister” link.
You can also remove the file
Once unregistered, access FileRun from your new domain and register it again.