HELP! :( Exception when running EA utils :(

[Pete Light]

Hey guys, bit of a EAUtils newbie here but from what I can gather I simply had to install, select the top level Requirements model (created using Add Model-->Core Modelling-->Use Case Model) and then select go to extend ribbon (in EA v13), select eaUtils-->Project Browser: sort elements by alias.

When I do this I get the following exception:

************** Exception Text **************
System.NullReferenceException: Object reference not set to an instance of an object.
   at eautils.app.EAutilsPackage.checkPackageLocks(Repository repository, Package package, Boolean checkContent) in c:\02-Data\OD\1.OD INTERNE\AB LABS EA\02 PLUGINS EA\eautils\src\app\EAutilsPackage.cs:line 70
   at eautils.gui.PackageTreeSortByForm.PackageTreeSortByForm_Load(Object sender, EventArgs e) in c:\02-Data\OD\1.OD INTERNE\AB LABS EA\02 PLUGINS EA\eautils\src\gui\PackageTreeSortByForm.cs:line 47
   at System.Windows.Forms.Form.OnLoad(EventArgs e)
   at System.Windows.Forms.Form.OnCreateControl()
   at System.Windows.Forms.Control.CreateControl(Boolean fIgnoreVisible)
   at System.Windows.Forms.Control.CreateControl()
   at System.Windows.Forms.Control.WmShowWindow(Message& m)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.ScrollableControl.WndProc(Message& m)
   at System.Windows.Forms.Form.WmShowWindow(Message& m)
   at System.Windows.Forms.Form.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)

And then nothing available to select in the eaUtils dialog box that subsequently pops up. It just says it's still Busy in red

By the way I'm using SysML 1.4 packages and requirement elements (although I think that shouldn't matter?)

Thanks! Pete