Hi to all.

For fix that problem I leave the Verification plugin enabled.

And I edit the tpl/footer.tpl and I add

PHP Code:
Only registered members can view the code. 
Now the google analytics works fine... without any problem.
I don't know why, but maby the plugin it's not working fine.
I din't try to put the plugin in the header position.

I just edit that file, and a few hours later the code worked fine for me.
Also I leave the plugin with that code enabled.