Solution
⋖Phenomenon⋗
In the Mac OS X v10.6 environment, when scanning using the operation panel of the main unit continuously, as MP Navigator is not launched, scanning cannot be performed (no response even after pushing the button).
⋖Solution⋗
Download the special tool (MP Navigator EX X.X Opener) from the download site to install it.
Caution
For how to use the tool, see the procedure in the downloaded file.