I guess purchasing the software at full price constitutes a donation does it not ?
It does not. You've given money to a parasite. Nobody cares if you use the program without throwing a few dollars at the author. However, we do care when that leech gets your money for selling something they don't own and don't support - which is why you ended up here looking for help. ImgBurn might be freeware but it's also copyrighted. Your apparent apathy only encourages this vermin to continue selling something they don't own.