edit:

       It was corrected in FSB v2.4.0.1

Also for the bad links. I'm changing the look of the site and there is a little mess in the moment. The glossary is here: http://forexsb.com/library/glossary.html
It can be reached from the Library page.

The first obvious bug I encountered was a .NET exception that occurs when adding an opening rule and selecting a category from the left pane.
I usually select by clicking/double clicking and got this exception on two different computers:

See the end of this message for details on invoking
just-in-time (JIT) debugging instead of this dialogue box.

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
   at Forex_Strategy_Builder.Indicator_Dialog.TrvIndicatorsLoadIndicator(TreeNode treeNode)
   at Forex_Strategy_Builder.Indicator_Dialog.trvIndicators_NodeMouseDoubleClick(Object sender, TreeNodeMouseClickEventArgs e)
   at System.Windows.Forms.TreeView.OnNodeMouseDoubleClick(TreeNodeMouseClickEventArgs e)
   at System.Windows.Forms.TreeView.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

----------------------------------------

************** JIT Debugging **************
To enable just-in-time (JIT) debugging, the .config file for this
application or computer (machine.config) must have the
jitDebugging value set in the system.windows.forms section.
The application must also be compiled with debugging
enabled.

For example:

<configuration>
    <system.windows.forms jitDebugging="true" />
</configuration>

When JIT debugging is enabled, any unhandled exception
will be sent to the JIT debugger registered on the computer
rather than be handled by this dialogue box.