Erm, okay. You installed everything into "E:\my games\D&D". Check.
Now, how did you end with a different folders for 1.1 and 1.2? Both 1.1 and 1.2 should be installed in "E:\my games\D&D\EB" if you did that.

One question before I give up; in the EB1.2 installer, did you remove the 'First select your RTW where EB1.1 is, then remove this' ?