ADT - Unhandled event loop

Hi,

I've been trying to use some of the versions of ADT. I've tried kepler and luna so far and in every one of them I usually get the following error:

and then I get prompted to close eclipse due to this 'SWT error'.

this is a clean install of eclipse(both Juno 4.4 and Kepler 4.3), I just installed and downloaded ADT following the instructions here

I've looked around the web, seems to be a memory problem in eclipse. I've tried raising the maximum memory that it can use to 1gb and I still get this error.

Some other information that might be usefull:

Running Windows 7 64 Bits.

Kepler and Juno are x64.

Java 1.7.0

Any Ideas?