Pay $29 for upgrade now have to pay for compatible scanner/camera etc

I ended up having problems with CanoScan Toolbox and the 9950f that I scan with. The Toolbox would launch when I turned the scanner on and repeated scan the platen; unable to cancel the app. Killing the app hung the driver, so I couldn't use CT, Image Capture, or VueScan without rebooting.

I ended up deleting CanoScan Toolbox, adding the scanner as a device in System Preferences>Printers and Scanners, and using Image Capture exclusively. Works great. The printer is a little long in the tooth, so will be looking for a compatible scanner replacement for photo and film scanning once Mountain Lion comes out.

Thanks, great relief!!! 😀

I should have searched here earlier, not at the Canon sites ...

Works for my 8400F on a German 10.7.4 system.

In case anyone needs the European language files:

http://www.canon.de/Support/Consumer_Products/products/scanners/CanoScan_series/ CanoScan_8400F.aspx

http://www.canon.de/Support/Consumer_Products/products/scanners/CanoScan_series/ CanoScan_4400F.aspx

The rest works like described in the original post.

PFantastik!!!

This got my 8400F working great again. And with the toolbox to boot!!

Thank you Thank youThank youThank youThank youThank youThank you!!!!!

Has anyone updated to 10.8? Does the scanner continue to work or are we back to square one? I'm afraid to update. :)

Unfortunately, the "rabrack workaround" is no longer working for me, with my CanoScan 9950F, 10.7.4, and iMac mid-2011. The only way I can scan at all is to restart the computer and then immediately run Vuescan. Even that only works intermittently, and is a royal pain.

tony_affigne, I have a mini running 10.7.4, a 9950F, and Vuescan. I could only get this to work if I checked "Open in 32-bit mode" in the Get Info window. Under these conditions, my 9950F seems to work properly with full capabilities.

What a performance, David! Have you tried using Apple's Image Capture application? It comes with 10.7 (Lion) which is what you say you are using. It recognises my 8400F, though I don't know how well it scans because I'm still using Photoshop CS4 and can use the twain plug-in with this.

I remember I could no longer use the software that came with a SCSI Microtek E3 and I tried Vuescan and Silverfast but neither of them scanned as well as the Microtek's own software so I carried on booting into OS 9 when I needed to scan, but eventually I no longer had SCSI on my machine and bought my present 8400F.

I HATED giving up a scanner that could still give most home scanners a run for their money (and win every time). The 8400F doesn't handle gold and silver anywhere near as well as the Microtek did. Just as well I don't get to scan a lot of that. :-)

Thanks, David. I'll give it a try. I presume you mean open VueScan in 32-bit mode? Where can that be done?

Has anyone tried updating to 10.8? Still works? I've got our up-to-date-code so I can download 10.8, but I don't want the scanner to stop working again....

Highlight Vuescan in the Finder window Applications. File > Get Info. Check the box "Open in 32-bit Mode." I can't check this protocol from this computer, however.

Stephen Jonke, I'm not sure about 32-bit mode for programs in 10.8. I am not especially willing to test this.

I've updated to 10.8 and CanoScan Toolbox won't recognize my 9950F scanner. I've looked in Image Capture and the scanner doesn't show. The scanner will work with a plug-in for Photoshop but I have to restart Photoshop after each scan.

Has anyone had any luck with a 9950F or have a procedure? I've written to Canon to see what they might say.

Firat of all visit product page on canon.com site, and see what they say there (writing to such a big company may result in a long wait and a generic answer). It seems they do not offer details, just mention compatibility with Mac OS X, that is all.

Secondly, run software update, if your driver is installed, this may detect if it is updated.

Canon has always had a good support for Mac OS, so I think they will offer a driver update it the existing one does not work with ML.

Same here. I've tried reinstalling the drivers and no luck with the Canoscan toolbox. The scanner doesn't show up in Preview either, like it used to under Snow Leopard and Lion. Fortunately, Vuescan continues to work great. I really don't want to give up this scanner because it does such a wonderful job with large format negatives.

Canon says we are out of luck. The 9950F scanner isn't supported on Mountain Lion. Nuts! I can get it to work through the Photoshop plug-in but that's all. Sigh.

Cattus Thraex - If you read this entire thread, you'll learn that Canon's support of these scanners on OSX is pretty bad, having end-of-lifed many of their models on Mac that Canon continues to support - and work fine - on Windows 7. This thread describes a workaround using old drivers, thanks to one user's ingenuity but no thanks to Canon.

Now that I've upgraded to ML, unless a new workaround is figured out, I'll have to buy a new scanner. You can bet however that I won't make the mistake of buying another Canon. It's a shame: my scanner hardware works fine; I'd be happy to pay Canon for working drivers and apps that didn't necessitate buying a big pile of plastic, metal and glass.