well well, i've got a nice solution here ,too
My friend tabby made a quest bug fix for ISRO (with the help of nyoko)
all credits for the work goes to those 2 buddys
you need this file :
http://www.megaupload.com/?d=C92FKSRA (full packet)
or this :
http://www.megaupload.com/?d=GS0EPCW3 (only .txt file, pk2Editor needed)
the first is a full packet with a .txt file + pk2 tools( it shows up as a virus but isn't. optional(if you don't thrust me) you can download the second file, it contains only the needed .txt file, so you need to download the Editor by yourself, our if you already got the Editor.
1. Backup you current .pk2 (safety goes first

)
2. open the pk2Editor
3. select "file" and load you Media.pk2
4. select "select file" and select the textquest.txt and choose "import"
5. have fun ingame
as i said above credits go to Tabby and Nyoko, and credits for me for translating

so hopefully i don't forget anything, it's 2:30am here ,so i hope everything is understandable
ps: i can't give you any guarantee that everything works perfect, we can't test it in isro.