I have a Canon T2i with a 64Gb Patriot SDxc Class 10 card in it.
When I want to record video I get the error mentioned in the title after only a few seconds of recording.
However it doesn't happen all the time. One out of maybe five tries, I am able to video without error.
I've read threads that mention formatting the card to solve the problem, or instructing me to not delete files on the card from the camera, but those did not solve my problem.