If you click Help > Updates in PSE12 you should get Camera Raw 8.3 which is required to open D610 Raw files.
I’m thinking the updates don’t work on Vista and XP.
8.3 is the last version for CS6 on XP and Vista. Not sure about Elements 12 though.
My, perhaps fuzzy, memory is that ACR 8.3 will work as a plug-in on Vista but the automatic updates from inside ELEMENTS will not work, hence the instructions for a manual update process, which does work.