Basic Steps in Troubleshooting
This topic is a guide which aims at helping you to understand what is wrong with your application. Here we consider the most popular errors:
If an error occurs, we recommend you to start with the debug console which allows you to get error, debug, and information messages from
Image Uploader right in your browser. To turn the debug console on you should:
- Set the DebugScriptLevel (or debug.level)
to
3.
- Specify how debug messages should be displayed (in pop-up window, console, or alert) with the DebugScriptMode
(or debug.mode) property.
Allow pop-up windows or open browser error console. Here are the ways to open the console in the most popular browsers:
- In Internet Explorer 8 open Tools -> Developer Tools (or press F12), then select Script tab
in the left pane and click Console in the right pane.
- In Mozilla Firefox we recommend to use Firebug.
- In Google Chrome click the Wrench icon and select Tools -> JavaScript Console (or press Ctrl+Shift+J).
- In Safari turn on the Develop menu in the Advanced pane of Safari Preferences,
after that go to Develop -> Show Error Console (or press Cmd+Alt+C).
- Reload your application.
The following code inserted in your application will print all debug messages from Image Uploader to pop-up window (or to the console
if pop-ups are blocked).
ASP.NET<aur:Uploader ID="Uploader1" runat="server"
DebugScriptLevel="3" DebugScriptMode="Default" >
</aur:Uploader>
PHP<?php
require_once "ImageUploaderPHP/Uploader.class.php";
$uploader = new Uploader('Uploader1');
$uploader->setDebugScriptLevel(3);
$uploader->setDebugScriptMode("['popup','console']");
$uploader->render();
?> If you prefer JavaScript, remember that the following code should be inserted before rendering Image Uploader:
JavaScript<script type="text/javascript">
$au.debug().level(3);
$au.debug().mode(['popup','console']);
</script>
For more information about the debug console, please, see the Using JavaScript API topic.
Image Uploader Does not Render
Firstly, make sure that Image Uploader is installed on the client side; for more information on how to install the client parts
of Image Uploader, see the Installing Image Uploader on Client Side topic.
Another possible reason is an error in your script which embeds Image Uploader. Please, use the debug console
as it is described at the beginning of this topic to find the error.
Message "Image Uploader Encountered Some Problem" Appears
It means that an internal server error has occurred. Far more likely that:
Upload is Complete but Files are not Uploaded
This can indicate one of the following:
- You did not specify any Converter. If so, specify at least one.
- You do not actually save uploaded files. In this case, either implement the upload processing script or use the autosave feature. For more information, please, see the
Saving Uploaded Files topic.
- You use the autosave feature, but did not specify DestinationFolder.
- You are trying to find files in a folder different from the one specified in your upload script.
- You use PHP platform and experience a server-side error (HTTP code 500); see the Debugging PHP Upload Scripts topic.
Redirect Message Appears
There are three possible reasons of getting "The server attempted to redirect you to http://someserver.com, but server redirects are not supported." message:
- Your upload script tries to redirect users to another page, but Image Uploader does not support redirection in an upload script.
To implement redirection use the RedirectUrl property.
- You upload in non-Internet Explorer browser and lost session or authorization cookies, so the sever tries to redirect you to the login page. Please, see the
Maintaining Sessions and Authentication topic.
- A server error has occurred and the server tried to redirect users to a custom error page, please, see the Debugging Upload Scripts topic.
See Also
Reference
Manual
Other Resources