On clicking a web link in DrawFBP help the program locks. (Version 2.5.06, Windows).
I enabled Java Console following advice at http://www.java.com/en/download/help/javaconsole.xml
On launching DrawFBP using Java Web Start the console appears and is then hidden by DrawFBP. I moved that aside and maximised the Java console.
Then key 5 at the Java console to set the trace level, then Help > Launch Help [OK] in DrawFBP. Console reports the connections.
Then click FBP web site in the Overview of Help and the console displays a stack trace. I tried to copy the text but could only get a screen shot, which I will email.