I successfully installed Google Mail application on my Sony Ericsson
K610 mobile phone and it worked very well. Unfortunately, I wanted to
connect automatically to my other Google Mail account and couldn't
find a method of changing the user name and password.

Foolishly, I deleted the Google Mail application from my phone and
tried to install again. On clicking on the link to http://mobile.google.co.uk,
I get onto the Google Mail page giving various options, one of which
is the "Google Mail (download)". On clicking on that link I receive a
link stating "Get the new, faster, Google Mail for the Sony Ericsson
MIDP2". This turns out to be version 1.1.1 and the application starts
to load then informs me that it is an "Invalid Application".

Is anyone able to help? With thanks.