If you use the Safari browser, you may deal with several problems while loading a page with Java Uploader or Downloader.
When you are faced with any difficulties, first you should visit the http://www.java.com/verify web page and ensure that you have the latest Java version by following the update instructions that will appear on the screen.
If the problem still occurs, you may need to deal with one of the following issues:
The article below describes solutions for all these problems.
While opening a page with Java Uploader or Downloader you may see the Missing Plug-in message:
This message means that a proper version of Java plug-in is not installed. To resolve this problem you can follow the easy steps below:
Alternatively, you can visit the https://www.java.com/en/download/mac_download.jsp page to download the Java.
When you open a page with the Java applet you may see the Blocked Plug-in message:
Usually the security dialog asking whether you want to allow or block the applet loading. If you choose to block it, the browser automatically blocks the applet until you unblock it. There are two methods to unblock the applet.
The first method is:
The second method is:
When you try to open a page with Java uploader, you may see neither applet nor any warning message:
This means that the Java is not allowed in browser settings.
To avoid it you should open Safari Preferences -> Security and set the Allow Java checkbox next to Internet plug-ins (selected with a blue rectangle):
Safari versions 6.1 for OS X 10.8 Mountain Lion and 7.0 for OS X 10.9 Mavericks do not allow Java to access the local file system. Using those Safari versions you may either see a warning message instead of the Java applet or not be able to navigate to folders and select files.
If you see the Java blocked for this website message, click it and choose Trust in the pop-up window outlined with the red rectangle on the following picture:
After this, the Java applet will be displayed correctly, but you will still not be able to navigate folders and select files without more configuration described below.
To allow Java to access the local file system you should perform the following steps:
If a web page with Java Uploader or Downloader displays correctly, but does not upload or download chosen files, this may mean two things:
The first thing you should try is to make sure that you have the latest Java. You can do it on http://www.java.com/verify.
If you have the latest Java but it still does not work, check your security level:
While opening a page with Java Uploader or Downloader you may see the following security dialog with the warning message in the yellow box:
And after you run the applet, you see the SecurityException message instead of the uploader.
This means that the web page uses the old version of Upload Suite or File Downloader. You should report this security dialog as a potential problem to the support team of the website you are working with.
While opening a page with Java Uploader or Downloader you may see the error message saying "Your security settings have blocked an application signed with an expired or not-yet-valid certificate from running":
This message means that an outdated version of the uploader is used on the website.
The best solution is to contact the website owners and let them know about the problem so that they updated their copy of the uploader. However if you need to upload files urgently, the following temporary solutions are possible:
Reducing the security level may make your computer more vulnerable and it is not recommended until emergency. It is recommended to return the security level back to High after the upload is complete.