How to animate Action Clip time in 2.75? Following the release notes relating to the changes to time and influence controls on strips, I keep running into issues with it. When I check the strip to have animated time and try to insert keyframes, I get the error message "No F-Curve to add keyframes to".

I can locate the Strip Time track in the Graph Editor for the given object, but there's no curve. Odd enough, I can add modifiers to the track and they seem to work as intended (ie. time becomes animated), but I can't find a way to control it manually.

Am I missing a step here or could this be a bug of some sort?
I think what you are looking for is the animated setting for these properties. In the NLA Editor you will find an Evaluation panel in the properties sidebar N where you can enable animated for the time and influence of the strip and add keyframes.

On my first quick look at this it does appear incomplete. When you enable these two animated settings, it appears to be keyframed but there is no f-curve, but it does then allow you to add keyframes to the values which does create an f-curve that you can then adjust in the graph editor.