I have the same problem as ju.c, only I cannot use the proposed solution.
My situation is as follows: I am preparing an unattended Windows
installation, based on the student edition downloaded from MSDNAA
(en_winxp_pro_with_sp2.iso). I slipstreamed SP3 (I used the network
install version , as recommended by msfn ) together with all
updates that can be slipstreamed . Furthermore, I integrated several
other updates via SVCPACK.INF , including IE7.
After installation of this windows setup, I experienced the same error
as ju.c, but you can see that it is not an option for me to uninstall
SP3. I was wondering, could I slipstream the Express Install into my
windows source (i.e., does it also support the /s:<path> switch) and
would that solve my problem? And in case that wouldn't solve the
problem, what else could I change in the setup of my windows
installation so that update 950759 will work.
 All updates that use update.exe as installer engine:
kb892130, kb898461, kb941569, kb942763, kb950760, kb950762,
kb951376, kb951698, kb951748, kb951978.
 kb923789, WUA 7.1.6001.65, Root Certificates Update, kb890830,
Internet Explorer 7
PA Bear [MS MVP] wrote:
>> From KB950759-IE7.log:
>> "AnalyzeForBranching: files installed on target workstation are from
>> branch which is incompatible with sp2gdr branch"
> Uninstall WinXP SP3 Beta/Release Candidate via Add/Remove Programs, then
> install WinXP SP3 RTM via Windows Update.
> How to remove Windows XP Service Pack 3 from your computer:
> WinXP SP3 - Read all prerequisites for a successful installation
> Steps to take before you install WinXP SP3