For some time now YouTube videos start then stop, saying that there is an error.
Using a 4-processor Intel computer running 64 bit Win7 and Firefox Beta, both kept up to date.
Tried lots of things advised on the internet but to no avail, run system cleaners, etc.
In desperation I even downloaded Internet Explorer; that worked the first time but now gives the same error!
'LiveLeak' videos work, but Youtube videos watched on LiveLeak have the same problem.
Any and all advice appreciated.
PS Just updated all the system & video drivers but this had no effect.