Anyone seen this error on SQL Server Client Tools Install?

Anyone seen this error on SQL Server Client Tools Install?

 

  

Trying to install SQL Server Client Tools on Windows XP. Get this error
message:

"A previous program installation created pending file operations on the
installation machine. You must restart the computer before running
setup."

We've been restarting computer for several weeks now as a normal course
of using the computer but the error message still shows and keeps us
from installing the client tools.

Any ideas?

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