development vs production environment setting

[eluser]bartgrrr[/eluser]
Hi,

My site works when I set the environment constant on 'development'. When I set it on 'production' I get a blank page (view HTML source gets an empty source file. The only difference between dev and prod is the database access BUT there's no database access on the first page?!?!

What can be causing this problem?

Thanks in advance!