iMovie '08: Built-in iSight camera not recognized in Yosemite

On this page

http://support.apple.com/en-us/TS2472

iMovie '08: Built-in iSight camera not recognized

it says:

In Finder, navigate to /System/Library/LaunchDaemons/

Select the file com.apple.mio.VDCAssistant.plist and delete.

Restart your system.

You should now be able to use your iSight camera with iMovie.

However, in Yosemite, it only has this file name

com.apple.cmio.VDCAssistant.plist

and I don't want to delete it as instructed without someone who knows telling me it won't hurt my newly installed and thus far working well OS 10.10.1, with iMovie 7.1.4 on my iMac 24 inch, Early 2008, 2.8 GHz Intel Dore 2 Duo, 2 GB 800 MHz DDR2 SDRAM. It worked with Leopard, and I don't recall having to use the above mentioned support page.