[MTUSUPPORT]

I noticed this on a computer here also once. When it happened Media Player had opened and was ripping the files into the computer as .wma, while Hoster was trying to import and this occurred.

Go and delete all of these smaller files off of your computer. Once you have done this, then Open My computer, Right click on your Plextor CD-R drive. Left click Properties, Left click the AutoPlay Tab. Select "Prompt me each time to chose an action", click Apply. You can also select Take No action, and then it should work.

This is what worked for me, let me know what you find.