OK, you'll probably be able to tell from the question, but I'm new to Logos 4.
Here's the situation. I want to link my ESV Interlinear with the TDNT. So, I open my ESV, click on the Interlinear button and click on Link Set: A...so far so good. Now in another pane, I open up the TDNT and also link it to A. Now, it seems to me that when I click on a Strongs number in the ESV Interlinear, the corresponding word would open in the TDNT. No soap. It works great with the WSNTDICT, but not with the TDNT.
What am I missing?
Thanks in advance for any help! 
Cliff