[TYPO3] Error!,,No template found!

[Rodrigo Cea]

Hello all,

whenever I'm editing my site, and I try to preview a page, I get the 
dreaded "Error! No template found!" box. The site looks fine if I'm not 
editing it, and I can open it using another browser (any one, just not 
the one I'm using for the BE editing). I asume it's looking for a 
template to use with the FE editing, but I don't know where this is 
configured, or how to turn off FE editing in the first place.

Thanks,

Rodrigo