Failed to install extension

[usf56]

I tried to install the Writertools extension but got the following
error message:

http://snowball.informatik.uni-osnabrueck.de/sholzhau/files/ErrorWritertools.png

platform: win xp
OOo-Version 3.0.1

[Dmitri Popov]

Hello,

Looks like you are trying to install the downloaded zip archive. You
have to unpack the zip archive first and then install the
WriterTools.oxt extension.

Kind regards,
Dmitri
---
Writer's Tools Manual:
http://www.lulu.com/content/paperback-book/writers-tools-manual/2115121