If this happens, and you are using a Mac computer, Close Safari. Open the Mac System Preferences and select "Java" (found in the "Other" section). In the "Security" tab of the Java Control Panel, make sure the "Enable Java content in browser" checkbox is checked, and lower the security to "Medium."
You can also try to enable java directly in Safari:
Close the Java Control Panel and launch Safari. Open Safari (it's the compass icon that, by default, lives in your bottom toolbar). In the top toolbar, select "Safari." In the dropdown menu, click "Preferences." Toggle over to the "Security" tab. Check the box next to "Enable Javascript."
If this happens on a Windows computer Java needs to be enabled in your browser settings.  Use the instructions below according to the browser you are using:
Firefox:  To enable or disable JavaScript in Firefox 3.6 or later: In Firefox for Windows, from the Tools menu, select Options. If the menu bar is hidden, press Alt to make it visible. In Firefox for Mac OS X, from the Firefox menu, select Preferences.... Click the Content tab. Check or uncheck Enable JavaScript. Google Chrome: On your computer, open Chrome. At the top right, click the three vertical dots and then Settings. On the left side choose "Privacy and security," click Site Settings. Scroll down to JavaScript and click there. Turn on Allowed (recommended). Internet Explorer Click on the Tools menu. Choose Internet Options... from the menu. Click the Security tab on the Internet Options pop up. Click the Custom Level... ... Scroll almost all the way down to the Scripting section. Select the Enable button for Active scripting. Click OK to finish the process. Click Yes when asked to confirm.
If that doesn't work  please send and email to staff@thewisedc.com and let us know which course it is.  We will send the test link to your email ASAP so you can take the test.