PowerPose became undockable in last week

Hello all -
I just ran into a strange problem - my PowerPose pane has become permanently undockable. I need to drag the tab into another dockable tab group, but I can't drag from the tab at all - only from the title bar. And even then, I can't dock the pane anywhere. I made sure I'm using the right version for my version of DS (4.9.4.117 Pro 64-Bit). It had been fine up until about a week ago, and it is still working fine in the version on my laptop. I didn't change anything that I know of. so I'm not sure what could have happened.
Any help or suggestions would be greatly appreciated! Thanks!
Michael
Comments
In the option menu for teh pane is there a Make Pane Dockable command (and a Make pane group Dockable)? If so, select it.
I guess I should have been more specific when I said I'd tried everything. I am well versed with the options menu, and the "make pane dockable" is already set.
Try setting the pane deliberately to be Undockable, close DS, reopen, and try docking. Another thing to try is right-click in an empty area next to the tabs of an existing pane group and select Add Pane (Tab)>Power Pose (with Power Pose closed).
Thank you so much! I wasn't aware of right click>Add Pane option!
It's a fairly recent addition, that's about teh first time I've remembered it without prompting.