Invalid or empty file class

CCleaner for Windows
1

Hi in ccleaner I have just 2 Invalid or empty file class and am just not sure if I want to delete as im not sure what it is

Invalid or empty file class Attractel.zoiper HKCR\Attractel.zoiper

Invalid or empty file class sourceaddonfile HKCR\sourceaddonfile

Thanks for any help

2

If you don't know what they do, don't delete them. Err on the side of safety.