Seems to me there must be something around the spoke holes that's poking through the rim strip to puncture the tube. I suggest checking the periphery of each spoke hole for little burrs or roughness.

A longer shot is that the tube was damaged when being used with the old rim strip, and now is more easily punctured, or can't take pressure at all.

I've never had a problem like this, and I use Velox tape. There must be something about that rim causing the problem.