Error while installing: %1 is not a valid Win32 application (1 Viewer)

[Elkvixen]

When I try to install MediaPortal 1.0 RC3 on a clean system I get the following error:
%1 is not a valid Win32 application.

Information about the error can be found here:
MediaPortal Pastebin - collaborative debugging tool

In the installation I select the following:
Start with the installation now
Yes - I will use MediaPortal to watch TV
Yes - I will use MediaPortal to watch HD content
Perform an advanced installation
Singleseat Installation
Microsoft SQL-Server Express

Then I press next to all the following screens until I press the "Install" button, then the error happens.

I've tried installing MediaPortal by selecting MySQL 5 instead of Microsoft SQL-Server Express and that works.

TV-Server Version: 1.0 RC3
MediaPortal Version: 1.0 RC3
MediaPortal Skin: Standard
Windows Version: Windows XP Pro SP3
CPU Type: AMD 4850e
HDD: WD 750GB
Memory: DDR2 800 2GB
Motherboard: Gigabyte GA-MA78GM-S2H
Video Card: Onboard HD3200
Video Card Driver: 8.541.0.0
Sound Card: Onboard Realtek
Sound Card AC3:
Sound Card Driver: 5.10.05657
1. TV Card: Hauppauge 500
1. TV Card Type: Analog
1. TV Card Driver: 2.0.48.25037
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec:
MPEG2 Audio Codec:
h.264 Video Codec: Cyberlink PowerDVD
Satelite/CableTV Provider:
HTPC Case: Chieftec HM-02SL
Cooling: Zalman 7500
Power Supply: Corsair VX450 450w
Remote: IMon Pad
TV:
TV - HTPC Connection:

 

[funkstar]

Are you saving the downloads to a network share?

I think this is the .NET bug where you can't install some things from the network, they have to be local.

 

[Elkvixen]

The MediaPortal setup exe is put on the C drive, which is the same drive I want to install the application.

 

[funkstar]

but what about the other installers? Like Microsoft SQL-Server Express.

 

[Elkvixen]

Now I must come with the stupid question, but isn't it downloaded automatically?
When I choose MySQL 5 it was installed automatically without me having to download it on the side, so my thought is that the installer retrieves the files itself.

 

[potmar]

I had a similar problem and had to install win installer 3.1 (download WindowsInstaller-KB893803-x86.exe from MS website)

 

[flokel]

This error seems to be appear when there's no internet connection available during installation.

Can you confirm this Elkvixen ?