Shooting AVCHD on my trusty AX100 during a University Convocation Ceremony when all of a sudden the screen goes black or "recovering or some such" and recording stops and cam goes to standby. Fortunately I was also recording externally from hdmi so its not the total disaster it would have been.
This card has been filled maybe 5 times and formatted same number of times. BEWARE

I had two of these in my GH4s. They started giving trouble after a few cycles, not stopping but pausing recording of their own accord.

Now use SanDisk Extreme Pro XC 1 3 10 64gb cards which seem okay.


Ron

Where did you purchase the cards from?

Thankfully I bought it from Amazon.ca June 2016 so within the 1 year amazon warranty.
Transcend warranty them for life and I used the utility on their website to verify authenticity.
Amazon has already shipped replacement (last night merely hours after my note to them). yay (I think) Now I have to worry the whole time I'm recording with the replacement :(

There are a lot of cards out there. Of course, we will hear about the ones that go bad. But most and I mean most will be of good quality. I would put it down to just bad luck. Who has SD cards that have been used hundreds of times without problems?

This is the issue which caused me the most stress when making the move away from DV tape.
I just new someday there would be a catastrophic failure costing me immediate lose of income from the gig and a valuable regular client.
Well I've lost lots of regular clients over the years but none due to sd card failure lol. This was a real close call however as I decided at the last minute to record externally as well as the live stream and internal recording.
Redundancy rulz