Url_for_file_column and image_tag not working right together

i just got file_column working and i love it. but i’m having some
problems with the urls. my application is not in the base directory, it
is in a folder called “/testapp”. when i use “image_tag” with
“url_for_file_column”, i get this path:

/testapp/testapp/entry/image/3/myimage.jpg

the image is located at:

/testapp/entry/image/3/myimage.jpg

to see if it was my file_upload making the wrong urls, i tried something
like:

<%= link_to ‘Image’, url_for_file_column…

the links work perfectly fine. has anyone has the same problems?