Corrupted images in Develop module

[Demi37497749c7qs]

Does anyone know this that fails when you are editing photos in developing... I'm really stressed, help!

[John R Ellis]

On Mac, the typical cause of these symptoms is a corrupted photo due to failing hardware: A bad memory card, card reader, or computer hard drive. You can narrow down the cause by seeing if you have problems importing from the same memory card to another computer, using a new memory card, and importing to a different hard drive.