Oh my, my SPLAT on Windows 10 Pro doesn't like when I try to do it. Some clips end up with no waveform at all, not just the image. No sound at all. Is this my system's version of Sonar or a known bug?

Are they all on the same track and pointing to the same audio?

They are on different tracks, but it's happened as well with different individually selected clips on the same track too. Not sure what you mean about pointing to the same audio....

They were different takes while tracking.

Hmmm...now you have me wondering about that. Just tested different clips with definitely different audio (different takes) and it worked. AND, just tried it on 6 clips from the same audio track and it worked. Damn, irreproducability. Now I'll have to wait until it happens on its own again with this in mind to check out.
 
Thanks, Craig.