The 'classic' wizards ,which includes the Reverse mapping wizard, are in the maintenance mode. We have frozen all new development for these wizards for some time now. I did verify the error with Sql CE 4.0.
Can you try the 'Domain model' wizard to try and connect to a SQL CE 4.0 database? You can find more information on how to do this, here
. With the new context approach you will benefit from all new features and also an easier API.
Nevertheless I will fix the problem for the Reverse mapping wizard and the fix should make it to the Q3 release.
the Telerik team
Follow @OpenAccessORM Twitter channel to be the first one to get the latest updates on new releases, tips and tricks and sneak peeks at our product labs!