Blank Index Page after

[XTCHost]

This is the problem that I have

I upload files using ftp and place in the folder /data/media/1/
I place thumb nail in /data/thumbnails/1/

I then go to admin and "Check new images"

Thumbnail is found ok and info / data is loaded to db

When I go to index it is blank page - I am uploading swf files 40mb+ but page only should be showing the thumb so I do not see the problem.

To get round this I put the full url path of the swf file / thumb and it works ok

Any ideas?