Why am I asked to insert a cd in the drive by my registry repair

[akasha111]

Hello,
I have recently downloaded a registry cleaner repair from open source and is meant to be a decent one.
I am not that technically versed yet............why does it ask me to insert a cd on the drive when it has detected erros???

 

[JDFan]

Is it asking for a particular CD (ie. the windows installlation disk ??) -- Normally if it finds that system files have become corrupted it will need to retrieve the original files off of the installation disk in order to replace the corrupted file with a non-corrupt copy so will need the original disk to get the original file off of that cd.