Using Windows 7, when trying to remote control a machine using K-VNC, you may get the following error:

VNC Viewer: Error
setReflected: This function is not supported on this system. (120)

Although the remote machine running the Kaseya agent is using the KVNC server, the viewer part is actually using RealVNC viewer, which has been renamed to kvncviewer.exe.

There is a beta version of RealVNC that fixes this. Kaseya seem to have incorporated this version in the product. You shouldn't need to do anything other than run IE as Administrator the first time.

Make sure you add the Kaseya URL to your trusted sites.

The kvncviewer.exe file lives on the Kaseya server in the folder C:\Kaseya\WebPages\install. When you remote control an agent using K-VNC, this file is called by KRlyCCon.exe, both of which are copied to C:\Users\YourUserName\AppData\Local\Temp in Vista and Windows 7, or C:\Documents and Settings\YourUserName\Local Settings\Temp in Windows XP.

I have had cases where the KRlyCCon.exe file is copied to this path, but kvncviewer.exe is not. If you manually copy the file here it should work. This also seems to happen on Windows XP.