Well that still doesnt make alot of sense to me. Im an actual engineer. And when Im told that a higher revision number is older than a lower revision number, Im not going to be quick to download anything till I can make sense of the story. For all I know, the Proteus website I found is the fake page ready to send me a trojan. And if they are both legit, then why did they derail on standard version number norms? Is one a light version and one a pro? Or is one a 32bit versus a 64bit? I certainly wont get the strait story if scammers are responding to me. So Im asking the same question on several sites besides the pages offering the downloads. That way I am sure to get good info eventually. Only then will I do a download, if it looks like it could fit my needs. Right off the top I would have figured 8.9 is the latest release. Thats the way version numbering works.