This may be something trivial but ....
I have just installed Tunnelblick, and have imported an OpenVPN client config from a Windows 10 machine. It says it's been imported successfully, and I can see that all of the files have been loaded into the appropriate Resources directory, but when I click on it, every field is greyed out, as is the Connect button. The log contains a single line telling me the build number.
I have done the obvious things like changing the line endings to LF from CR/LF, and removing all of the Windows path references.
Is there something obvious I have missed ?