Only recovery can read my external SD card
I finally had my phone unbricked and had everything working today, and installed Slimkat. Works great, bugs are minor, etc. but I noticed that it won't mount my external SD card (64GB class 10) that I got recently. I tried plugging it in to my laptop and nothing happens, no new device sound or any response at all. Tried plugging in my old 32GB SD card into the laptop and it made a sound and popped right up. This told me that my card just went bad, but for some reason TWRP can read it just fine. Using the file manager in my recovery, I can see all the files and everything on the 64GB card. I even restored a nandroid from it earlier today.
I thought that maybe Slimkat just doesn't like 64GB cards, but the fact that Windows wouldn't read it but TWRP will tells me that something funky is going on and I have no idea what it is. It seems like ever since I jumped ship to Samsung I've been getting funky problems that make no sense...