[GNC] Gnucash 5.13.2 Update crash

[G R Hewitt]

MacPro 2010 5,1 High Sierra 10.13.6
16GB RAM

Just tried to run the revised update, which crashed with the following
error:

Process:               Gnucash [1813]
Path:                  /Applications/Gnucash 5-13.app/Contents/MacOS/Gnucash
Identifier:            org.gnucash.Gnucash
Version:               5.13-2 (5.13-2)
Code Type:             X86-64 (Native)
Parent Process:        ??? [1]
Responsible:           Gnucash [1813]
User ID:               502

Date/Time:             2025-09-30 07:21:32.116 +0100
OS Version:            Mac OS X 10.13.6 (17G14042)
Report Version:        12
Anonymous UUID:        B4A04F62-A419-8F42-C79B-0A1063D83E6E


Time Awake Since Boot: 3800 seconds

System Integrity Protection: enabled

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

Exception Type:        EXC_CRASH (SIGABRT)
Exception Codes:       0x0000000000000000, 0x0000000000000000
Exception Note:        EXC_CORPSE_NOTIFY

Termination Reason:    DYLD, [0x4] Symbol missing

Dyld Error Message:
  Symbol not found: _pthread_jit_write_protect_np
  Referenced from: /Applications/Gnucash
5-13.app/Contents/MacOS/../Resources/lib/libguile-3.0.1.dylib
  Expected in: /usr/lib/libSystem.B.dylib

Thanks in advance.