WP-Polls error 500 on dashboard

WP-Polls is creating an error 500 when trying to access the administration of wordpressMU blogs using version 2.6 of wordpress. If the actual url of a admin backend site is entered, it can be reached. This seems to only effect the dashboard. If another plugin is used to disable the dashboard and redirect admin users to another part of the backend things work fine but the dashboard is still not reachable.