danielrose -
I agree with Hansanneveldt on this. Your PodXTs don't need ASIO4All drivers, though if you have them installed you would be able to use them with the Pod. That's highly inadvisable being that the Line 6 drivers have always been extremely stable.
Unless you need them for another device, I recommend uninstalling the ASIO4All drivers and then using the Line 6 Monkey to confirm that your Pod's drivers and firmware are completely up to date.
If you need to keep the ASIO4All for all drivers for some reason, you need to make sure that you click the AUDIO SETUP button in RiffWorks and select the Pod from the list of ASIO devices. This may not totally fix the problem with the ASIO4All drivers. If RiffWorks crashes again, before re-launching RiffWorks after it crashes, send us the RiffWorks.log file. It's located in My Documents - Sonoma Wire Works - RiffWorks. You can send it via email to
support@sonomawireworks.com along with a description of the problem and a link to this case.
Thank you,