I assume you are referring to the BGT mod? I can't come up with a reason why you should be having problems with it. I still find it strange how buggy the mod remains for other users, as it always worked without a hitch in my five million playthroughs
All I can offer you is a few globals to set with the console so that having the dreams is not required to romance Imoen once you rescue her. Here they are:
Set Global "HadImoenDreamRomance1","GLOBAL" to 1
Set Global "HadImoenDreamRomance2","GLOBAL" to 1
Set Global "HadImoenDreamRomance3","GLOBAL" to 1
edit: I should have mentioned that if you set these globals, it will be as if the dreams already happened.
Sorry!
On the other hand, the good news is that TCDale's new and improved Imoen Romance will be released soon
TM, and all these problems will be no more!