This crashes tkinter

Mike_Cashes_Tkinter.py

@@ -0,0 +1,93 @@
+import PySimpleGUI as sg
+import psutil
+import time
+from threading import Thread
+import operator
+
+"""
+    Crashes with this information:
+    Tcl_AsyncDelete: async handler deleted by the wrong thread
+
+    Process finished with exit code -2147483645
+"""
+
+# globale used to communicate with thread.. yea yea... it's working fine
+g_interval = 1
+g_cpu_percent = 0
+g_procs = None
+g_exit = False
+
+def CPU_thread(args):
+    global g_interval, g_cpu_percent, g_procs, g_exit
+
+    while not g_exit:
+        try:
+            g_cpu_percent = psutil.cpu_percent(interval=g_interval)
+            g_procs = psutil.process_iter()
+        except:
+            pass
+
+
+def main():
+    global g_interval,  g_procs, g_exit
+
+    sg.PopupOKCancel('My popup')
+
+    # ----------------  Create Form  ----------------
+    sg.ChangeLookAndFeel('Black')
+    form_rows = [[sg.Text('', size=(8,1), font=('Helvetica', 20),text_color=sg.YELLOWS[0], justification='center', key='text')],
+                 [sg.Text('', size=(30, 8), font=('Courier New', 12),text_color='white', justification='left', key='processes')],
+                 [sg.Exit(button_color=('white', 'firebrick4'), pad=((15,0), 0)), sg.Spin([x+1 for x in range(10)], 1, key='spin')],]
+
+    form = sg.FlexForm('CPU Utilization', no_titlebar=True, auto_size_buttons=False, keep_on_top=True, grab_anywhere=True)
+    form.Layout(form_rows)
+    # start cpu measurement thread
+    thread = Thread(target=CPU_thread,args=(None,))
+    thread.start()
+    # ----------------  main loop  ----------------
+    while (True):
+        # --------- Read and update window --------
+        button, values = form.ReadNonBlocking()
+
+        # --------- Do Button Operations --------
+        if values is None or button == 'Exit':
+            break
+        try:
+            g_interval = int(values['spin'])
+        except:
+            g_interval = 1
+
+        # cpu_percent = psutil.cpu_percent(interval=interval)       # if don't wan to use a task
+        cpu_percent = g_cpu_percent
+
+        # let the GUI run ever 700ms regardless of CPU polling time. makes window be more responsive
+        time.sleep(.7)
+
+        display_string = ''
+        if g_procs:
+            # --------- Create list of top % CPU porocesses --------
+            try:
+                top = {proc.name() : proc.cpu_percent() for proc in g_procs}
+            except: pass
+
+
+            top_sorted = sorted(top.items(), key=operator.itemgetter(1), reverse=True)
+            if top_sorted:
+                top_sorted.pop(0)
+            display_string = ''
+            for proc, cpu in top_sorted:
+                display_string += '{:2.2f} {}\n'.format(cpu/10, proc)
+
+
+        # --------- Display timer in window --------
+        form.FindElement('text').Update('CPU {}'.format(cpu_percent))
+        form.FindElement('processes').Update(display_string)
+
+    # Broke out of main loop. Close the window.
+    form.CloseNonBlockingForm()
+    g_exit = True
+    thread.join()
+    exit(69)
+
+if __name__ == "__main__":
+    main()