I tried this (MacBook Pro, 2011), although with the SMC reset, there was no real way of checking whether anything had happened...I held down the buttons as instructed for 3-4 seconds and hoped for the best. Did it twice because the first time it didn't work. Neither did it work the second time.
The camera works fine with Skype. With FT, the message is "there is no connected camera" and there is no way (like, perhaps, under the VIDEO tab??? There's only MICROPHONE information there. Huh?) to connect a camera to FT. Really odd. Nothing happens when I click "preferences" either.
Any ideas?
I have closed and reopened FT.
I have rebooted after closing all applications.
I have hard rebooted (using power button) after closing all applications.
I have done the SMC reset.
I am close to throwing the computer against the opposite wall, but I suspect that may be even less useful than the preceding four efforts.
Any suggestions (particularly with sympathy) welcomed.