When trying to export a DXF you may get this error:

Quickmap: Unexpected Error Encountered

The directory name is invalid.
.
More information is available in the Quickmap logs. Please
report this to support@quickmap.co.nz

If you look in the logs, you may see these errors:

IOException: The directory name is invalid. in FrmExport.ExportVector()

Stack trace 0: at Custom.Software.Quickmap.Forms.FrmExport.ExportVector()

Stack trace -1: at System.IO.Directory.SetCurrentDirectory(String path)

Stack trace -2: at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)

This issue should be fixed in the latest version of Quickmap, but if not, please ensure that you are exporting the DXF file to a directory that you have access to, which is not locked down by Group Policy (such as the C:\ drive of a terminal server being hidden or denied traverse access).