Wow. I just had the same exact problem occur to a Transcend 32gb (Class 6) card I was using in the HMC150. I too was shooting something pretty important: a wedding I was paid to cover. I’m now made very nervous by the notion that I won’t be able to retrieve any of this footage…
@ Daniel or Paul: Where do you stand with your retrieval? Were you able to recover anything, and – if so – please inform me how.
Thanks,
Jason Teets
Ikonic Images
https://www.ikonicweddings.com