Can't update publication files

Hi,

I need to upload the latest version of papers which were accepted to conferences.

The problem is that when I upload a new file, there is no message confirming the file was uploaded and the web page is redirected to the CNGL home page.

When I try to check if the new file was uploaded I get an error message. For example:

"The requested URL /projects/project23/nolisp_cabral_2013_final.pdf was not found on this server"

I tried with other publication entries and I get the same error.

Joao