Problem with Yosemite and Scansnap

I have been using DTPO for many years with a Scansnap S510M scanner.

I just upgraded my Mac to Yosemite, only to find that Scansnap Manager is not working.

I looked at the Scansnap site, and find that the Scansnap Manager for the S510M is not supported on Yosemite. Is this true? Any work-around? Or do I need to spend $400+ on a new scanner?

I have a ScanSnap 500M

Took a chance and installed the latest driver for Yosemite, even though there was no mention of support for my scanner

Works perfectly.
OS X 10.10
ScanSnap Manager Version 6.0 L10
2007 iMac