Came across this sometime ago, can't confirm it's correct or not, I've not got Sidekick any more so I can't 'play'
If you try it and it's ok, please post back to let us know.
To correct the error you look for a file named Wininit.ini and rename it to Wininit.old.
After doing this Sidekick 99 should install as it should.
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