I have a brand new Sony Vaio laptop I setup for a client running Vista Business SP1. I tried to install her HP P2015 printer but receive a message "driver installation module stopped working and was closed". Looks like a bunch of people out there are having problems like this and not just with this printer or Sony laptops. I see no answers anywhere, people are going crazy tryging to find a fix. Another post here says to install all your drivers first before installing SP1 but what about all the computers shipping with SP1 already installed now? I guess Technet has been unhelpful. Some people have stated that this started for them pre SP1 after a certain update sometime back in February. They do not say if they tried uninstalling that update or even which one it was. Any idea's?