Hi all, I´m recently migrate from osticket 1.9.6 to 1.9.12 and then to 1.10.Versión osTicketv1.10-rc.2 (231f11e) — Up to dateServidor del Software WebApacheVersión MySQL5.6.20Versión PHP5.3.29I´m having a problem: I create a ticket using client side and attach a PDF file (a litle one). Everything is ok: ticket was created, alerts were sent and I can see the ticket and attach file from link that osticket sent as an allert message.When I login as agent (admin in fact) I could see the ticket and an attach reference name. However when I click on this link (attach file link) the message "Unknown or invalid file" appears. I tested with chrome (it donwloads a file error.html) and Mozilla (Unknown or invalid file message).I tested this issue using database storage method and file method. Both generate similar error message.Any idea? Best regards, Claudio