two problems with popover plugin

I am having a couple of strange issues with the popover plugin.

I am running WP3.1 and BP1.2.8 with studio theme

1. after installation and activation I can drag but not drop the popover rules. I have tried in Chrome and FF. All other settings are ok. I have switched off all other plugins apart from BP, akismet, wpmudev notification and popver but I still cannot drop the rules in place. There is not issue with drag an drop in menus and widgets.

2. when I deleted another inactive plugin, popover was automatically selected for deletion at the same time. An odd thing to happen which I have never seen before.

Hope you can help