Some Windows systems fail to launch due to Java Access Bridge problem

Relevant stack trace is:

```
java.awt.AWTError: Assistive Technology not found: com.sun.java.accessibility.AccessBridge
at java.awt.Toolkit.loadAssistiveTechnologies(Toolkit.java:773)
at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:872)
at java.awt.Window.getToolkit(Window.java:1168)
at java.awt.Window.init(Window.java:395)
at java.awt.Window.(Window.java:433)
at java.awt.Frame.(Frame.java:403)
at ij.ImageJ.(ImageJ.java:143)
at ij.ImageJ.(ImageJ.java:131)
```

After a few web searches, I am totally clueless as to what causes this problem.

See also:
- http://code.imagej.net/chatlogs/fiji-devel?times=prefix&start-date=2015-04-21&start-time=0400&end-date=2015-04-22&end-time=0400

Start by reproducing the launch failure on an affected Windows system and trace the Java Access Bridge error through java.awt.Toolkit.loadAssistiveTechnologies and ij.ImageJ initialization. Review the linked chat log and determine the cause; the issue is done when affected systems launch without this AWTError.

Written by the indexing model from the issue text.