Ive set up a simple SQL Server database with one simple table.
One of the fields is called i_image and is an nvarchar(255)
I have correctly configured a dsn and when I insert a record
from Server Behaviours, I select the right connection and the
right table and column.

When I test it, it correctly sends the all the files to the server
but reports the following errors on each file:

Uploaded 0 files

Following files failed:
img_currentspecials.jpg (HTTP Error:500)

The files were definately transfered but the database was not updated.
What could be going wrong?