Virus on our computer

Put the summary of the bug you're having here

*What I expected to happen was...:*we expected to log on and start playing
Describe what you thought should happen here

*What actually happened was...:*program says 'building terrain' then goes to an 'oops' screen with a long log of the errors. We have since had the virus removed from our computer, but the game is still infected.
Describe what happened here

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...