Marketpress not creating store page on installation

I had Marketpress successfully installed but then uninstalled it. On trying to re-install it it does not create the Store page that I expect to see. Everything seems to be fine other than that - can create products etc

Can anyone suggest why this may be happening. I tried wp-ecommerce in the same WP installation and uninstalled it so wouldn't be surprised if there was some conflict going on.

I have deleted the database tables that seem relevant and even gone through the options table to delete the wp-ecommerce stuff but still no store page being created by Marketpress. I am installing in the plugins folder for individual blog activation.

Thanks