I just borrowed a makerbot replicator 2x. I have used the same printer at work often. I tried using this one and got SD card read error. I tried plug in in the USB and my computer does not recognize it. I also can not find a single 2gb sd card because no one sells them. I reformated and partitioned an 8gb car so the only partion was 2gb and fat16 but that still gives me sd card read error. Any help would be appreciated before I loose all of my hair.
In the first year with my 2x I had similar issues once and a while. MakerBot sent me a new controller. 2gb sd cards can be bought online or Walmart a couple years ago. I bought extras when I found them.
This is probably not the issue in your case but at one time I thought my old SD card had died but in reality I just had to purge the files from it. Once I deleted the old files it started working again.
You can only use a 2GB card. I tried to do what you had done in a larger card and it does not work. Try looking for microSD cards, I have one of those from an old phone.