Long story short, I managed to pair once, but I couldn't send files. I un-paired and can't re-pair to it.
The phone keeps saying "Failed to communicate, incorrect pin or passkey" and my computer says "Adding this device failed, please remove the device and try again" during the pairing process.
I have installed Cyanogenmod 13 over the Android 4.0.1 kernel it had before, but I haven't installed gapps on it yet. I've seen some other issues here and there, but they haven't really impacted much, but I'm worried it might have something to do with it.
Edit: I should mention that I want to send files both ways, forgot to in the original question.