-went into 'USB Computer Connection' under the Storage settings and ensured the "Media Device(MTP)" was checked off
-went into developer settings and ensured that the USB Debug settings was unchecked
-rebooted both tablet and computer
-unplugged and replugged in the USB cable multiple times.
Re-installed the kaschemme cm-10.1.3-RELEASE-k1-wifi, ensureing I did a complete wipe, cleared cache and DALVIK cache then installed ROM and GAPPS. Rebooted and went though set-up again. Plugged in the USB.. nothing. Checked USB Computer connection and it's set to media device.
The USB was working, that's how I got the ROMs onto the tablet in the first place. Does anyone know of a way to get the USB support working again??