Posted in Common Support Issues
If you get a pop up box that says "Error: Invalid file extension: undefined":
This is an error that happens with plupload html5 mode after upgrading to Firefox 7. The best way to fix this issue is to upgrade the gallery. This issue is fixed in 3.2.5 and 2.7.7. If upgrading immediately is an issue, and you are on the Joomla 1.6/1.7 branch, you can choose flash as pluploads first preference in the component paramaters, upload tab. Otherwise please use Google Chrome or Internet Explorer to upload, or choose the html5 form uploader in the component paramaters, upload tab.
If you get a pop up error message that has a lot of html code in it like like: id="form-login-username" id="form-login-password", or you get some error response like 403:
This means that the uploader can not use the same logged in session that the browser has to upload images. This usually happens when the uploader is uploading using flash, and the server has the suhosin or mod_security module enabled. The best away around this is to upload with html5. All versions above version 2.6 of the gallery have plupload as an upload option and this will upload with html5. Please go into the component paramaters, and then upload tab, and make sure plupload is selected. If you are using Joomla 1.6/1.7, please make sure html5 is the first preference for plupload. With these settings, all browsers that support html5 upload will most likely upload successfully. Internet explorer does not support html5 upload, all other browsers do.
If you need to be able to do multiple upload with Internet explorer, and you have the above error, then you must get suhosin/mod_security disabled on your web server, your web server admin may be able to help with this.
Versions 2.6+ also have html5 form as an upload option if plupload fails. In all browsers apart from IE, you can choose multiple files with this form, but they will be upload together in one go, so on most servers you can only upload 10-20 at a time.
If you get an empty pop up box that just says Error::
It may be the case error reporting is turned off. You can see if error reporting is off by going to the Joomla backend -> help -> system info -> php information and searching for display_errors. Please see this page for info on how to get errors on.
If you get a Plupload Initialize Error:
It is likey this has happened in the frontend where there is a javascript conflict with another extension. For plupload to work, there needs to be one jquery library on the page, and jquery needs to come before the plupload scripts in the html source. It may be the case that there is another extension on the page that has already added jquery. If this is the case, please make sure this other jquery library comes first in the html source, and then go into the gallery component paramaters, upload tab and choose No for include jquery. You may need to remove all jquery libraries from the page, and use an plugin that makes sure jquery is loaded first. If this does not help, please send support a frontend login, so we can diagnose the javascript issue.
