I'd be glad to help as best I can, but I need more information about the issue.
What system are you on (pc/mac)?
What LDraw software are you using?
Where is the parts library installed?
Did you tell the software where the parts library is installed?
Could you please elaborate on what you mean by not "not updating the parts list." Were you trying to add new unofficial parts that you just downloaded and they didn't show up? Are there no parts at all and you were trying to have the software recognize the parts library?
What system are you on (pc/mac)?
What LDraw software are you using?
Where is the parts library installed?
Did you tell the software where the parts library is installed?
Could you please elaborate on what you mean by not "not updating the parts list." Were you trying to add new unofficial parts that you just downloaded and they didn't show up? Are there no parts at all and you were trying to have the software recognize the parts library?