Canoscan 9000F One-Touch Buttons: What 'Registered Software Application' Do I Need?

Question

I have a Canoscan 9000F Mark II.  I'm trying to get the scanner buttons to work with it -- particularly the COPY button.  I've installed all available Canon software for Windows 7 (x64) for this scanner.  When I hit the COPY button, I get this dialog box:
So I went into the Scanner Properties for the scanner and found this Events tab.  But for every scanner button including COPY, it says "No application is registered for this event."  It won't let me select anything other than Take No Action.  The other choices are grayed out:
If I go to the original Canoscan 9000F (NOT the Mark II version) drivers and software page, I see this software called MP Navigator EX.  I installed that just for the heck of it, since none of the Mark II apps seemed to want to register as a "registered app" for this function.
When I did that, it actually put that as a choice (the only choice) by Start This Program:
I thought that would do the trick, but then when I hit the COPY button, I get this dialog box:
So I figure that MP Navigator EX is missing from the Mark II download page for a reason -- it's for the original 9000F and is not compatible with the Mark II.
OK...so...what IS compatible?
What app do I need to "register" for this buttons in order for them to work?
I'm completely stumped.  Someone please help; I'd greatly appreciate it.
-Thanks

Answer 1

So, I went through Canon Support. The rep not only had no idea how to fix the problem -- he first tried to deny that the problem existed at all, using phrases such as, "it SHOULDN'T need any other app in order to work," "you SHOULDN'T be getting that message from the Canon software," "it SHOULD work as long as you have the Canon Toolkit installed." Uh huh. Except that I obviously do, I am, and it doesn't.
He was also completely unaware that there are TONS of forum messages and other posts on the Internet about the same or similar problem. Tons of them. A Google search came up with 193,000 results. The rep said that this is the first time he'd heard of anything like this. Which means he's either lying or blatantly ignorant.
After about 45 minutes of repeating myself, and then finally pointing him to the pretty screenshots on this thread here (which he first, when I offered to give him the link, quickly dismissed as, "that won't be necessary,"), he finally decided that the problem was going to have to be escalated to the engineers.
That was a week ago. Most likely my request just went into the round file and was quickly forgotten. I'll be VERY surprised if I hear back again on it. Suspect I'll have to call again, get another rep, and go through the same stupid routine all over again.
Nice job, Canon. How about checking your forums once in a while? Do a Google search on this problem, for crying out loud. It's NOT an isolated case, by any means. It NEEDS to be fixed, and PRONTO!
Ridiculous.