After Update - Computer Does Not Recognize

[lilme08]

I updated to 4.4.2 on yesterday and plugged my One up to the computer for some drag and drop, but the computer does not recognize my device. The notification screen tells me that MPT is on and that USB is connected. When I click on My Computer, I can see HTC One under scanners and cameras, but when i double click on that, it's blank.

Please help me. I have not changed any settings on my One.