Well, I think you know this already. That's why you asked for a third party solution. I thought the solution (have you tried it yet?) might be to use the TWAIN built-in capability of Mac OS X, and since you said that Image Capture wasn't seeing your printer, thought that connecting your MF4150 via USB cable would be the next solution.
However, in all rounds of the web that I've searched, all come to the same conclusion. This model is indeed Mac compatible, but the scanner function is PC-only. (Stupid, huh? Not Apple's fault). And I think by "MP" that guy meant Multi-function Printer... left out the F in between for MFP.
Here it is from ITPro in the UK:
...Somewhat bizarrely, although the MF4150 is allegedly PC and Mac compatible,
its scan function works on PC platforms only
. Although there are Mac print and fax drivers for the MF4150, the bundled MF Toolbox scan software is PC only. Why only partially market a MFP in this way? It makes no sense, as it takes the 'multi' out of MFP...
http://www.itpro.co.uk/labs/103236/canon-isensys-mf4150.html
Message was edited by: Pismo 900
I couldn't resist! All I'll say is that it puts a whole new term for MFP if you can't use the scanner function. =)' (Sorry).