Problem
The error message indicates that the affected printer connected on a ThinPrint Port, that used the Virtual Channel protocol (ICA or RDP), either does not find the appropriate ThinPrint Client or the relevant ThinPrint Client is not running at the time of the print attempt.
Solution
Please check on the client machine whether the suitable Thinprint Client has been installed and whether is started automatically with the remote connection. You can see that on the corresponding ThinPrint icon in the System Tray.