Installation of MetaTrader 4 Mobile.CAB was unsuccessful.

 
Installation of MetaTrader 4 Mobile.CAB was unsuccessful. The Installation file is not intended for this device.

I am getting this message when trying to install Metatrader Mobile 4 on my Motorolla Q phone running Windows Mobile 5.0. Any ideas on how to work around this? It says that Windows Mobile 5.0 is supported on the Mobile download page.
 
This is Mobile download page - "Mobile Terminals"
 
ok, so i must be misunderstanding.

System requirements: PDA, Windows Pocket PC 2002 or higher.

Windows Mobile 5 is higher than 2002, so it does not work b/c I am using a Q phone? Is there a full list of phones/pda's that are supported? are there plans for compatibility with Windows Mobile 5 and 6?
Reason: