#1 Start archiving SP files.
#2 Try disabling IISAdmin and W3SVC in Services and try installing SP4
again.

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Emmers Presson [MSFT]
This posting is provided "AS IS" with no warranties, and confers no rights.
> in the middle of setting up sp4-express, my computer
> stopped and supplied me with this error message..." Setup
> failed to remove ism.dll script mappings....Service Pack
> Setup will abort." It was 65% setup at the time, and I
> never archive old files....any sugggestions????