Issue
When using Firefox, it might not properly detect that the KWizCom Client Agent is installed and as a result it will ask the user to install it again even though it is already running.
Resolution
In order to resolve this issue follow these steps:
Click "Advanced" and then click "Add Exception".
From there, click on Confirm Security Exception
After doing this, you will now be able to use the Clipboard Manager/Paste+ with Firefox.