Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Data corruption on about 5% of files

While using this card with a Sigma DP2S, about 5% of my Raw files could not be read in Lightroom. This happened with both cards. Did not have this issue with a Sandisk card in the camera... so could be a specific compatibility issue between that camera and the card, but still, it caused me to lose a number of photos.