So I decided to play the game again today, got up to the test chambers with excursion funnels and frankencubes and am now stuck.
The cubes don't stay in the funnels properly, if they fall into the funnel they begin to slow but quickly fall out the other side. They also refuse to stay on buttons when held by a funnel.
Here's a video that demonstrates the bug:http://www.youtube.com/watch?v=HfzzvXyh9Jw&feature=youtu.be
Has anyone figured out a workaround? I cannot finish my play through as I can't get past the testchamber just after the one in the video.
I'm certain this doesn't have anything to do with my system specs but what I will say is that I have the version of portal 2 with sixsence motionpack enabled.
Also as with other reports I've seen, if I verify my game cache theres one 15mb file it tries to retreive but as this same sized file get retreived every time I verify it I'm assuming it either fails or doesn't recognise that it has the file.