Hi @santillan,
Have a look at the View Source listing from that URL; it shows that you’re encountering PHP errors. I had a quick look at the surrounding code and suspect that something happened to your installation during the code upgrade process (you mentioned here Error creating new issue in OJS 2.4.6 that you just upgraded your installation). What process did you use to upgrade the code? Did you encounter any problems in that process?
Regards,
Alec Smecher
Public Knowledge Project Team