I am also trying to add the dropdown widget but if the booster plugin is active I can no longer add or delete any widgets at all.
Also the Customiser produces a blank white screen when clicked.
I have already tried the fix above (d/l and manual reinstall) and it has had no effect.
Any help much appreciated
Im on wp 4.4.2
woocommerce 2.5.5
booster 4.4.2
nirvana theme 1.2.3
