Hello out there...using SPLAT, I keep getting a message saying the US 20x20 can't be loaded. Sometimes it plays audio, and the midi doesn't work, causing me to have to reboot...just turning off the 20x20 won't reset it...I have to reboot..anybody else having this problem? Craig? 
Thanks!

http://tascam.com/product/us-20x20/downloads/
Hi! Just download and update drivers! 

I believe I already have...as well as the firmware

One of the known issues for some audio ASIO drivers is a bully audio driver will push your ASIO driver aside. Known to be bullies are anything from Creative Labs, Asio4all, PCI sound cards and some HDMI audio drivers. 
In some cases people have had to disable all other drivers including native on board sound to keep their ASIO drivers from being kicked out. 
 
There have been a few posts about Tascam firmware updates trashing things lately. Seems for the model you have and the us 16x04 I think I saw them in the Computer sub forum.