My drive locks up with the newest version of your software?
This is a problem with the older drives not supporting the new technology. You can upgrade the Firmware for the drives listed below by clicking on the drive name. It will then open a dialog box asking you if you wish to Save the File to disk or Run it. You can choose either if you have High Speed Internet. If you have dial-up, then you will need to select Save to Disk. Save the file to your computer and then Run it to install it into the drive.
You might want to go back to version 3.303 or get a newer drive. The Plextor 760 models are the very latest and they are very fast.
Drives that will show this problem, that I am aware of are: