For instance if I copy 300mb of titaniumbackup files it will randomly stop in the process and tell me there is a problem writing the files. This also happens with other files. I can't seem to find anything in the logs either, but then I'm not exactly sure what to look for.
I've tried ES file explorer, the CM11 file explorer and FX file exporer. I've reformatted the SD card using CWM, put it in my card reader on my computer and was able to copy over 40gb of data flawlessly so the card doesn't seem to be corrupt.
I'm not really sure where to start with the troubleshooting, as I said before I'm not sure what I'm looking for in the log files regarding failed file transfers.