On the old wave editor, due to the changes in the newer windows operating system, there can be bugs like
Failed to create Directx Source Capture Buffer or Run time error 9 etc..
As a last attempt you can try downloading this setup file and reinstall and try again. To download the last wave editor, use this link
Alternatively you can upgrade to Audio Editor with a discounted price at 18 USD. To upgrade visit the Order page
We have created the Audio editor as a new product, not a newer version of Wave Editor. You may download the Audio Editor and try it before ordering.