Aparently that's the million dollar question because I contacted support with this same question and got the brilliant answer of "We don't support this product. Check the forum."
If Adobe doesn't support Adobe Digital Editions then who does?!?!?!
I think I've got it sorted by myself.
Try checking that you do not have a different language keyboard activated.
That is to say, set up everything in the same language from the Control Panel.
Once Digital Editions is installed you can then change your keyboard if necessary.
It works alright!!!
But you have to set all tour regional properties to the desired language, not just the keyboard (or at least I had to).
Thanks a lot for solving the riddle!
Well, if you change your regional preferences back then the language of ADE will change back too.
A pity adobe locked their software to the user's regional preferences.
My regional settings are set to Dutch because of the decimal point/currency/date/time options and I want to keep them that way.
However, I most definitely do not want the Reader in Dutch. Is there any option at all to change the language once you've installed it?