After several years of operation, for some reason our users are now unable to upload attachments to OSTicket. When using the web interface or email, users receive no errors. Instead our department simply receives the content, with exception of the anticipated attachment.However, on the support-end, when attempting to upload attachments, we receive the error: "Unable to post the reply. Correct the errors below and try again!" This only occurs when an attachment is selected to be uploaded. Without the attachment, the ticket is updated, but our users don't receive the updated information via email as they usually do.Any ideas? The only thing I assumed was permission folder issues, however, our attachment folder is set to CHMOD 777. I appreciate any help here.