Reported by Kevin Walzer

In running the demo, the Explorer icons don't render correctly - they
show up as black images. And Wish crashed once when I closed the demo
window, although that did not happen all the time. The relevant bits
from the crash report are below.

Process:               Wish [99402]
Path:
/usr/local/bin/../../../Library/Frameworks/Tk.framework/Versions/9.0/Resources/Wish.app/Contents/MacOS/Wish
Identifier:            com.tcltk.wish
Version:               9.0b4 (9.0b4)
Code Type:             ARM-64 (Native)
Parent Process:        Exited process [99400]
Responsible:           Terminal [1259]
User ID:               501

Date/Time:             2024-10-15 21:10:39.2262 -0400
OS Version:            macOS 15.0.1 (24A348)
Report Version:        12
Anonymous UUID:        26D1923E-BD96-653C-31D6-8364BFB18100

Sleep/Wake UUID:       A744C76B-DD30-448E-9EF8-293B290EBDDB

Time Awake Since Boot: 840000 seconds
Time Since Wake:       5593 seconds

System Integrity Protection: enabled

Crashed Thread:        0  Dispatch queue: com.apple.main-thread

Exception Type:        EXC_BAD_ACCESS (SIGSEGV)
Exception Codes:       KERN_INVALID_ADDRESS at 0x0000000000000000
Exception Codes:       0x0000000000000001, 0x0000000000000000

Termination Reason:    Namespace SIGNAL, Code 11 Segmentation fault: 11
Terminating Process:   exc handler [99402]

VM Region Info: 0 is not in any region.  Bytes before following region:
4366106624
      REGION TYPE                    START - END         [ VSIZE]
PRT/MAX SHRMOD  REGION DETAIL
      UNUSED SPACE AT START
--->
      __TEXT                      1043d8000-1043e0000    [   32K]
r-x/r-x SM=COW
/Library/Frameworks/Tk.framework/Versions/9.0/Resources/Wish.app/Contents/MacOS/Wish

Thread 0 Crashed::  Dispatch queue: com.apple.main-thread
0   Tk                                       0x104733ea4 Tk_FreeFont + 52
1   Tk                                       0x10472d7f4 0x104714000 +
104436
2   Tk                                       0x10472da4c
Tk_FreeConfigOptions + 164
3   libtreectrl2.5.dylib                     0x111c6df8c TreeDestroy + 632
4   libtreectrl2.5.dylib                     0x111c6adec TreeWidgetCmd +
2836
5   Tcl                                      0x1044096ac 0x1043e8000 +
136876
6   Tcl                                      0x104405ef4 Tcl_EvalObjv + 308
7   Tcl                                      0x104407218 0x1043e8000 +
127512
8   Tk                                       0x10472138c Tk_BindEvent + 4776
9   Tk                                       0x1047282ac TkBindEventProc
+ 340
10  Tk                                       0x104730bdc Tk_HandleEvent
+ 932