DICOM import fails, crashing the ClearCanvas services, if you attempt to import files from a mapped network drive. I rebooted the PC, started up ClearCanvas and checked to see that services had indeed started, then remapped the drive and tried to import again and the problem was reproducible.
I don't know if this makes any difference, but the mapped drive was accessed using different user credentials than the user that was logged in and using ClearCanvas. CC was running as an ordinary user and the mapped drive was accessed using the credentials of the remote PC's local administrator account. The operating system that was being used was Vista.
To prove that there was not an issue with the DICOM files, I copied the folder from the mapped drive to the local machine's desktop and then tried importing the files from the desktop. This worked without any problems.