Hi, Bob.

Did you try hair of newt?

With version 3.40p, we added some additional visual feedback about docking. If you drag an undocked tab anywhere on top of the main PingPlotter window, it should show you where the tab can be docked (and moving towards that direction will dock it there).

If that doesn't help you solve it, maybe send a screenshot to support - it's possible that there might be something inconsistent in the PingPlotter workspace file that's causing things to not work right.

- Pete