I have the same adaptor as Deadlegion I actually have 2 of those and a couple of adaptors that some of you guys are putting up in the links. I'm using a 32Gb Sandisk class 10 in this adaptor I cba putting another card in slot 2 to see if it works as 32Gb is enough for my needs.
I had the same problem as op about corrupt data and I finally found out the cause was the micro sd cards I was buying were fake off ebay.
There is a software on the net which is free to download which tells you the actual capacity of a micro sd card because some people know how to manipulate what Gb it is it is called h2testw
