Can't say fer sure, but da be some counter-fittin' going on... fer real cheap SD cards. Dat could b yer problem, just sayin.
Does youin like to play cards?
Seriously, there are memory cards that look like the real deal. No many people know what a real deal memory cards looks like, there all less than 18 Months old. I thought everyone would like to know. Musically, bRAD