Cannot start My Drive Connect. Get message 'MyDrive Connect is running. Please close it first'.

Squiffy Registered Users Posts: 1
New Traveler
edited January 2019 in MyDrive Connect
I got the message after I was asked to do a MyDrive Connect update.
I have tried to uninstall - same message.
Switched startup to 'disabled' - same message.
No obvious app processes running on task manager.
Occasonally I get a message saying 'New version of software required', so I download it and guess what... same message!
Occasionally my sat nav (a 510) says it is connected (!?!) but there is no app running on the desktop. Weird...

Suggestions appreciated.