Question: Excel 2010 and Maple 17 problem

It's been a couple of years since I last used the Excel add-in for Maple 17. It was working before, but now it isn't.

When I click any of the Maple icons in the Excel Add-Ins -> Custom Toolbars tab, I get a Visual Basic run-time error 453, "Can't find DLL entry point vbLoadMapleCursor in WMIMPLEX". The only choice in the dialogue is End, after which none of the Maple icons respond.

When I quit Excel after trying this, I get the same error dialogue except the message refers to vbMapleQuit. I select End, and then Excel exits. (If I don't touch the Maple icons during an Excel session, then of course no VB error dialogue referring to Maple pops up.)

An answer to a ten year old MaplePrimes question on the Excel add-in suggests editing the Excel 2010 32-bit path registry entry. Indeed my HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\Excel.exe Path key has no reference to Maple. However that info is so old, for Maple 9.5, that I hesitate to use it. I tried though. As suggested in that question, updated for Maple 17, I tried adding ";C:\Program Files (x86)\Maple 17\Excel\" to the end of the existing Path key entry, but I still get the same VB error. I also tried adding ";C:\Program Files (x86)\Maple 17\bin.win\", and both: "C:\Program Files (x86)\Maple 17\bin.win\;C:\Program Files (x86)\Maple 17\Excel\". I tried disabling and reloading the add-in from the Excel Add-Ins menu. Interestingly, even when I disable the add-in, the toolbar icons still show.

Anyway I'm at a loss how to proceed. Any help is appreciated. --Graham