Ok, you mention problems with JStrack and XP ... funny how nobody reported any of this to me, JStrack's author....
I work with JStrack on my FreeBSD system and on my XP laptop. I have never encountered any errors with it not
running a second time, etc., but it sounds like what's broken is the association between ".tcl" files and Tcl/Tk's
executables.

Try this: From Windows Explorer, right-click on JStrack's autoconfig.tcl to pull up the menu that asks if you want
to open it, open it with _______ (whatever), etc., etc..... Select the "Open With ___" and from there, go to
C:/Tcl/bin/ and select wish84.exe. Before you actually run anything, tell Windows to use this program every time.

Also, note: if you're using Tcl/Tk versions other than version 8.4.x, I'd be surprised if it worked at all. Anything lower
will probably not support the libraries and packages that JStrack uses, and higher (i.e., 8.5.x) almost certainly will not
work due to changes in the Tcl/Tk language itself.

I'm 99% sure that one of these is what's causing the problem you've described. Also...I just posted a new release (3.2.0)
with a windows EXE version on jstrack.org (http://www.jstrack.org/jstrack/).

And next time, please don't assume that anyone has told me about any problem you encounter with JStrack. You know
what they say about assuming anything......

Later,
--jim