Are the lock pins not coming up when you unlock the car? On the inside, is the door catch release handle not pulling out as normal? If so, it would seem your actuators are not unlocking everything completely. Even if the lock pins are coming up, mechanically something isn't being released inside the door. That's just my first guess.
If the inside door handle is able to pull out but the door is not releasing, then you'll probably be looking at the door release pulls inside the door. Use that bmwfans site I gave you to research what the insides of the door mechanism look like then tear into the door.
http://bmwe32.masscom.net/
Go to the Fixes --> Body & Interior --> Doorpanel Removal
There are also three other catagories you might want to look over as well. (I haven't read them over yet so I don't know if they'll really help you or not...)