Crashes and monitor issue

[Doobywho]

Everything was working fine with 10.7 and then we upgraded to Mountain Lion and the issues started. We've tried reinstalling the driver several times and we've even wiped the computer and reinstalled osx a few times. Issues always start after installing the displaylink drivers.

Issues we are having:
- When the login screen appears, it appears on the 3rd monitor (displaylink monitor) but that monitor doesn't turn on until after you login so we can never actually see the login screen. we just have to type the password in and press enter. No it is not set to be the primary monitor.

- Finder crashes consistently. Anytime you try to do anything that uses finder, it crashes.