Here are some useful posts that I found there:
https://vborg.vbsupport.ru/showpost....&postcount=758
https://vborg.vbsupport.ru/showpost....&postcount=740
https://vborg.vbsupport.ru/showpost....&postcount=749
I'm using it for downloadble products with 4.2.2 and works fine. But I've did some code changes. If you can wait till Saturday when I'll be back at my office I can post the modified version here
unsupported but
working.