I am trying to solve the plague quest and have completed most of what is needed but seem unable to enter Dr.Elraths House a secong time. I found the key and entered his house then he says, He is busy and leave which uses the key i found. But then i cannot find him again and cannot enter his house. What have i done wrong? Is there some special way to enter his house twice? I have looked for a walkthrough and only found one which says that he cant remember how he entered the house the first time damn it

.Help PLEASE <img src="/ubbthreads/images/graemlins/puppyeyes.gif" alt="" />