Nothing but issues with 17.3, when attempting to redesign cases 3shape is looking in completely random folders for the dcm files. the latest error was for a mapped drive to our file server with absolutely nothing to do with 3shape, a reinstall didn't fix it, a clean install and restoring from backup to get all the cases back in didn't fix it, and no one appears to have any clue why this is going on.
would definitely not recommend this version to anyone unless you like downtime.