RE: [Rails] Application Error (Rails)

Hi all,
I tried porting over the default Photos app from RoR: up and running, to
my VPS hosted environemnt. I finally got everything up and running on
apache, and the app worked for a few days with no problems. Then,
yesterday, I started getting Application Error (Rails) whenever I would
go to the slideshow mode of the project. This persisted until I cleared
my mysql database and reloaded the data from scratch. This leads me to
believe it was a problem with some of the mysql data, but I cannot
confirm this. Is there any way to easily check which piece of data was
causing the problem? Note that the logs did not tell me anything. Any
way to tweak/configure mysql to avoid this in the future?