Peter
I will be brief and simple.Errors, errors, errors!What happened to SanDisk?  You need to check your QC unit!Awful product ever from a reputable memory company.Update: I got thisSamsung 32GB 32G Class 10 MicroSD C10 MicroSDHC Flash Memory Card Model MB-MSBGA/KRto replace the sandisk garbage. Replacement works as it should. Same on you SanDisk, you lost one of your long time customer.