I'm trying out Rackterm for the purpose of running commands put together from a 
GUI but it looks like the thread is crashing as soon as I try to create a 
terminal canvas.  Is it something I am not doing right or is there a bug?  I am 
able to run rackterm/xterm without error and that contains very similar code.  

Here's my code:

#lang racket

(require racket/gui

(define frame (new frame% [label "Example"]
                   (width 800)
                   (height 800)

(send frame show #t)

(define my-term (new terminal-canvas%
                    [parent frame]
                    [font-size 14]
                    [font-name "Courier"]
                    [term-var "rackterm"]
                    [command-and-args '("ls -lh")]
                    [set-title-callback (lambda (title) (send frame set-label 
                    [horiz-margin 2]
                    [vert-margin 2]

The terminal window appears and then immediately closes with the following 
error message:

"The evaluation thread is no longer running, so no evaluation can take place 
until the next execution.

Exited successfully."

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