Ghost Solution Suite 3.x, like Deployment Solution 6.9 with which it shares basic architecture, allows remote consoles to be installed. From an upgrade standpoint, this can cause issues when trying to upgrade. The installer for Ghost Solution Suite 3 performs a check for Ghost 3.x or Deployment Solution 6.9 consoles. If one is found, it will report this error: "We have detected that the Ghost Solution Suite Console is running on one or more remote computers." This will prevent installation from happening.
The solution, of course, is to close all these remote consoles. Subsequent checks will pass and allow you to proceed. In the event where the location of the remote console cannot be discerned, however, you can forcibly sever these connections by rebooting the mahcine where the upgrade is being done. Severing the connections in this manner will cause the remote consoles to display a connection error, but it is effective for bypassing the error. As always, it is recommended that you keep accurate inventory of all Ghost & Deployment Solution consoles so that errors like this are prevented from happening, and that upgrades can be performed when no others will be utilizing the software.