Question: I need to record a demo of our application. Can anyone recommend a good screen recorder?

I have tried CamStudio, but it's throwing errors. Any other good free software I should try?

Answer: 
Camtasia studio does a great job.  

In the case the app is cross-platform (java, web-based) you can ask a pal with a Mac to use Screenium, Snapz Pro or ScreenFlow.
You can do it with [ScreenToaster](http://www.screentoaster.com/) without installing any software (kind of).

Otherwise if you prefer a traditional application [Jing](http://www.jingproject.com/) and [Screen2EXE](http://www.screen-record.com/screen2exe.htm) are both free.