I also have a lot of extraction problems and I have not the faintest idea what could be wrong. I installed the mainfile,
then I couldn´t extract the tutorial. I chose a different path to install and repeated the whole procedure. This time I got the tutorial, the sounds but no movies. I tried with different servers with no avail. So for now I can play the game with sound but with no movies

As the artists from stardock has put so much effort in them it would be really a pain to do without it. As it is pretty late here I have to give up for now. My error message I get every time:
-- [Application] ----------------------------------------------------
Name: Stardock Central
Path: I:\Programme\Stardock\SDCentral
Version: 2.30.376, build: 120
-- [System Information] ---------------------------------------------
Platform: Microsoft Windows Windows XP, 5.1.2600 Service Pack 2
System Dir: C:\WINDOWS\system32
Time / Date: 22:53:48 -- Thursday, February 23, 2006
-- [Installing] -----------------------------------------------------
Server: http://sdcentral4.stardock.com
Server Dir: public
Network Id: drengin
Name: Movies for Galactic Civilizations II
App Id: gc2
Installed: False
Version: 1.0.013
Type: production
Reg Key: GalCiv2
Install Dir: F:\TotalGaming
Exe:
Last Updated: 02/14/2006
-- [Account] --------------------------------------------------------
First Name: John
Last Name: Doe
Email: maxdat@web.de
-- [Installation] ---------------------------------------------------
Download: I:\Programme\Stardock\SDCentral\data\public\gc2\production\gc2_Movies.xml 1
Load: I:\Programme\Stardock\SDCentral\data\public\gc2\production\gc2_Movies.xml 1
Download: I:\Programme\Stardock\SDCentral\temp\gc2_Movies.sdc 1
Extract I:\Programme\Stardock\SDCentral\temp\gc2_Movies.sdc 0 | Attempt: 1 | Extraction error 1
Download: I:\Programme\Stardock\SDCentral\temp\gc2_Movies.sdc 1
Extract I:\Programme\Stardock\SDCentral\temp\gc2_Movies.sdc 0 | Attempt: 2 | Extraction error 1
Download: I:\Programme\Stardock\SDCentral\temp\gc2_Movies.sdc 1
Extract I:\Programme\Stardock\SDCentral\temp\gc2_Movies.sdc 0 | Attempt: 3 | Extraction error 1
Result: Installation failed (33)