Why Does the Error Message Appear that Sonic Drive Letter Access Is Incompatible with Microsoft® Windows Vista™?
Microsoft Windows Vista may report that Sonic Drive Letter Access (a.k.a. Roxio Drag-to-Disc) is incompatible after Windows Vista starts. However, an update is now available for Windows Vista compatibility.A patch is now available at http://docs.roxio.com/patches/d2d3290.exeMore details on how to resolve the problem can be found here.
Right-click in the Sidebar area. Choose Properties.
Uncheck the Start Sidebar when Windows starts. Click Apply, click OK.
Restart the computer.
Put the check back in Start Sidebar when Windows starts.
Click Apply. Click OK. Restart the system.
If the Sidebar is still malfunctioning,
Click the Start pearl.
In the Search box, type CMD. At the top of the start menu window, right click CMD.EXE and choose "Run as administrator".
At the prompt, type sfc /scannow and press <Enter>. You will not need the Vista DVD for this.
Please post under the Vista boards if these steps do not resolve the issues described above.