Count me as another user that went from "An error occurred..." to cutting successfully. I have an iMac running OS X 10.10.5 Yosemite, the latest update, so it is possible to still get this working even with the latest Mac OS X.
1. Double-click the scal2_mavericks_usb_patch to install the USB driver patch.
2. Start Sure Cutsalot2, design and cut as normal.
3. Quit SCAL2 when done.
4. (Optional) Double-click scal2_mavericks_usb_patch_remove to remove the USB driver patch. If you have issues with other printers not working, you will definitely want to do this. But, if you have no other issues and use SCAL a lot, you may find it more convenient to keep the driver installed. Then, the next time you use SCAL2, you can skip steps 1 and 4.
I'm glad Craft Edge provided this for us, as I haven't used my Cricut Expression enough to justify it becoming a door stop.
