Question about how EQ2builder works

[Virodeath]

I am at work with some downtime and thought I would give the EQ2builder a spin. I downloaded it and Yafs UI (since I am fam. with how it looks) to play around with and when I try to open the EQ2ui.xml it says there is a error and to check ui.log. However I could not find a UI.log file anywhere. My question is do I have to have EQ2 installed on this machine? Does the builder look for things in certain folders of the game in order to work?

Thanks.