Imported uSequencer 1.4 into a new empty Unity 5.1.2 project on Windows 7 x64. Here's my experience. Package Installer is automatically launched. I choose to update all indicated updates. The installation finishes with a couple of errors and warnings: I take notice of the message that I may need to restart Unity for the changes to stick. After restarting Unity I create a new sequence. First I open the uSequencer window which throws "GUI Window tries to begin rendering while something else has not finished rendering! Either you have a recursive OnGUI rendering, or previous OnGUI did not clean up properly." I drag the Main Camera into the sequence. I rightclick and add a Event Timeline. I add a Debug Message event. In the inspector I set the message to "Hello World". I add a Auto Play uSequence prefab, hook it up to the sequence and save the scene to "test.unity". I start scene playback. The uSequencer window becomes empty with a large message "Select a Sequence..." When I want to edit the sequence so I stop playback, but the window stays empty and I have to reselect the sequence and expand the nodes that were open before... That's rather cumbersome. It appears that that always happens whenever the Sequence GameObject is not selected at the moment of starting scene playback. Since I edited the Debug Message event last, the USMessageEvent was selected. What's more annoying is that objects on the timeline do not react to the left mouse button anymore. I have to restart Unity to restore normal behavior. That is a showstopper. Aside from those problems several examples are broken even though there seems to be an elobarate update system in place. Why not just check and update the examples instead of relying on that system? uSequencer has been sitting pretty in my account since november 2013 but unfortunately I've never been able to use it. Whenever I tried it, it was running slow and unstable. Last weekend I was in a gamejam and decided for the first time in months to try uSequencer again. It broke my project because of the incompatibility with HipFilters. Today I'm trying to use uSequencer again with the fix released just after the gamejam deadline. I don't understand how other users are coping with this asset and rating it so high, maybe I just have back luck or a special version created just to annoy me?