This error message is displayed if the Redgate Client Service is stopped or unavailable and can sometimes occur when activating your Redgate products on your computer. 

To restart the Redgate Client Service open your Services console (Control Panel > Admin Tools > Services), select Redgate Client in the list of services and click Start.  

If this doesn't resolve the problem please send the latest Redgate Client Logs which can be found in C:\ProgramData\Red Gate\Shared Client\Log to Redgate support.