I open yesterday a discussion "Error 18 during installation of Maps 3.0 on a S60 3.1" about a problem of installation.
It seems I'm not alone to be blocked during the installation of Maps 3.0.

My #0000# infos:
V 31.0.016
09-12-08
RM-313
Nokia N82 (25.01)

I have the last version of PC suite: 7.1.18.0
and the version 1.0 beta 4 of Maps updater (provided on the Download and installation page of Maps 3.0)
I had just to click twice on the phone: once for accepting installation, once for accepting legal information. I had no prompt to close applicaitons.

The problem:
I launch Nokia maps updater
I connect the phone in PC suite mode (I try bluetooth and usb)
I run the installation process
The download on the computer and the transfer to phone work fine;
I agree for installation and legal information;
"Installer" is displayed on the top of main screen;
After 20 seconds a red warning with: "Unable to installl; Component is built-in" is displayed;
An error #18 is displayed on maps updater (computer).

Where is the problem?