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Maybe either the CD or the CD drive is flaky.   But the Windows will only read the Windows software on the CD, not the Mac application where the CD might be damaged.

Since you have a Windows PC,  you can try CD sharing and see if you can copy the Mac application to the Mac from the PC's CD drive.

See this Apple article.
<a rel="nofollow" target="_blank" href="https://support.apple.com/en-us/HT203973">https://support.apple.com/en-us/HT203973</a>
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**