I purchased this upgrade yesterday (Wavelab 7LE Upgrade to Wavelab Elements 8), but have been unable to reinstall Wavelab LE7 on my PC. I had to wipe my hard drive due to upgrading to El Capitan and Wavelab LE7 was not working. I had to reinstall an earlier OS. I have a Macbook Pro running Yosemte version 10.10. How can I get this upgrade installed on my PC? Otherwise I would need a refund.