It's not all Microtek scanners, just some of the older ones. I have a ScanMaker 6800 with Digital Ice that I love. And yes, I called and emailed Microtek and they told me they were no longer supporting this scanner past Snow Leopard.
So I guess I would have to have ScanPotter and I can't find anywhere to download it. A few sites pop up that say free download and when you go there it's a dead end, downloads to some other programs that I have no use for. Yosemite is not recognizing my scanner at all in the System Preferences, but when I used the demo for VueScan, lo and behold, there it was, scanning and working fine. That is the only way I have gotten a response from it since I upgraded to Yosemite. I'm still holding out on buying VueScan because I'm stubborn.
So I guess I would have to have ScanPotter and I can't find anywhere to download it. A few sites pop up that say free download and when you go there it's a dead end, downloads to some other programs that I have no use for. Yosemite is not recognizing my scanner at all in the System Preferences, but when I used the demo for VueScan, lo and behold, there it was, scanning and working fine. That is the only way I have gotten a response from it since I upgraded to Yosemite. I'm still holding out on buying VueScan because I'm stubborn.