When trying to open the viewer window after clicking on a client or server in VCastle, you see this :
To fis this issue, follow the steps below:
1. Click"MyNETLAB" at the top left
2. On the next page, click "Profile".
3. Click the wrench icon next to "Remote PC Viewer".
4. Click the button next to "NETLAB+ Remote PC Viewer Version 2" and click OK.
5. Click "Exit" to return to the main page.
6. Click "Enter Lab" to go back to your lab topology page.
7. Click on a PC or ser ver in your topology, open it and select "Run".