installation of SQL Server 2005 CTP (June) error 2147944003

During installation of SQL Server 2005 CTP (June) I get the error 2147944003.
This error refers to the installation of tools (client components).
The server components seem to be ok., services are running.
My os is Microsoft Windows XP Professional Service Pack 2 (Build 2600).
Could anybody help me, please?

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This is a part of summary.txt:

Machine : WBG5
Product : Microsoft SQL Server 2005 Tools CTP
Product Version : 9.00.1187.07
Install : Failed
Log File : C:\Program Files\Microsoft SQL Server\90\Setup

Bootstrap\LOG\Files\SQLSetup0006_WBG5_Tools.log
Error Number : 2147944003

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This is a part at the end of SQLSetup0006_WBG5_Tools.log:

Property(S): ProgramMenuFolder.Samples1033 = C:\Documents and Settings\All Users\Start Menu\Programs\
Property(S): SqlMenuFolder.Samples1033 = C:\Documents and Settings\All Users\Start

Menu\Programs\Microsoft SQL Server 2005 CTP\
MSI (s) (A0:D4) [11:23:21:000]: Note: 1: 1708
MSI (s) (A0:D4) [11:23:21:000]: Product: Microsoft SQL Server 2005 Tools CTP -- Installation failed.

MSI (s) (A0:D4) [11:23:21:100]: Cleaning up uninstalled install packages, if any exist
MSI (s) (A0:D4) [11:23:21:110]: MainEngineThread is returning 1603
MSI (s) (A0:B4) [11:23:21:230]: Destroying RemoteAPI object.
MSI (s) (A0:BC) [11:23:21:230]: Custom Action Manager thread ending.
=== Logging stopped: 11/21/2005 11:23:20 ===

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The checker says:
WBG5 : The current system does not meet minimum hardware requirements for this SQL Server release.

For detailed hardware requirements, see the readme file or SQL Server Books Online.
WBG5 : Microsoft Internet Information Services (IIS) is either not installed or is disabled. IIS is

required by some SQL Server features...

I did prove the requirements. Okay, IIS is not installed, but that can't be the reason.

Any chance you have SQL 2005 Express Edition installed? If so, this should help:

http://blogs.msdn.com/jpapiez/archive/2005/11/14/492534.aspx

jeff.|||Thank you for your help, but that doesn't work.
I have no express edition installed.
The only MS SQL Client-Software I have installed is the native client of my CTP.

Do you still have another idea?|||Search SQLSetup0006_WBG5_Tools.log for "Value 3". This will put you at the location of the log file that has the actual failure information. I doubt this has anything to do with IIS. Post that failure section back here.

Dan|||Thank you for this - it helped.
I could see that it is a space problem on C-partition.
Stupid that you cannot decide another partition.
So I removed some other programs from C - and the installation was successful!