Just updated to CC 2015.3. Everything works fine until I import a clip (any clip of any format) and start editing. Can't drag the play head, any sliders, or move clip position in the composition... Nothing.
Windows Memory Diagnostics (No Errors)
What about Resetting After Effects Settings File ?
Hold down Ctrl + alt + shift and Right Click on after Effects icon and Click Open.
if that did not work, would you Please submit a screenshot ?
I'm having the same problem in both AE 2014 and AE 2015. This renders the program pretty much useless, I NEED an answer ASAP, I have deadlines to meet, and this is a deal breaker.