Here is the text of an email from Sonic tech support that solved the same situation for me. I ignored the remove software and the remove hardware sections and it worked. Also the offending registry entry reappeared and I had to remove it again yesterday. I hope it helps.
I just want to let you know before doing the steps below that you may need to reinstall any other burning software on your system after doing the steps below.
- Create a System Restore Point
a. Click on the "Start" button, then select "All Programs", then select "Accessories", then select "System Tools", then select "System Restore"
b. Make sure there is a dot beside "Create a restore point", then click the "Next >" button
c. When prompted for a restore point description type "Before Sonic Troubleshooting", then click the "Create" button
d. Click on the "Close" button
Uninstall RecordNow again (we need to uninstall it because a reinstall during the last step will rebuild some settings)
To export a copy of your registry, please do the following:
a. Click on the "Start" button, then select "Run"
b. Type "regedit" and click the "OK" button
c. Locate and left click "File" in the upper left hand corner of the Registry Editor, then click on "Export"
d. Choose the Desktop as the location to save the file in, and name the file "regbackup"
e. Also ensure that under the "Export Range" section there is a dot beside "All"
f. Click on the "Save" button
Your registry should now be backed up to a file named "regbackup.reg" on your desktop.
- Remove the LowerFilters value
a. Expand the "HKEY_LOCAL_MACHINE" key (looks like a folder) by double clicking it (or clicking the "+" next to it.)
b. Expand the "SYSTEM" Key
c. Expand the "CurrentControlSet" Key
d. Expand the "Control" Key
e. Expand the "Class" Key
f. Please look for a key containing the following string of letter and numbers:
g. High light this key by left clicking once on it
h. On the right hand side you are looking for "LowerFilters" under the "Name" column, once you find it please delete it by right clicking on it and choosing "delete"
Uninstall the burner drivers.
Reboot (XP will rebuild the drivers)
Reinstall the software using the clean install instructions
Title: Clean install instructions for RecordNow