With text selected, I go to expand field text in the text menu, and then expand text. Then go back to expand text in the menu and program closes
More info from computer
Process: Affinity Publisher Beta [26525]
Path: /Applications/Affinity Publisher Beta.app/Contents/MacOS/Affinity Publisher Beta
Identifier: com.seriflabs.affinitypublisher
Version: 1.7.0.57 (1.7.0.57)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Affinity Publisher Beta [26525]
User ID: 501
Date/Time: 2018-09-06 10:34:24.217 +0100
OS Version: Mac OS X 10.13.6 (17G65)
Report Version: 12
Anonymous UUID: B6AAB57B-503C-1D5F-359B-8208F6537C73
Sleep/Wake UUID: 03AB06B1-0399-46F4-A972-AF959761A7D8
Time Awake Since Boot: 1100000 seconds
Time Since Wake: 3600 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 0x0000000000000100
Exception Note: EXC_CORPSE_NOTIFY
Termination Signal: Segmentation fault: 11
Termination Reason: Namespace SIGNAL, Code 0xb
Terminating Process: exc handler [0]
VM Regions Near 0x100:
-->
__TEXT 000000010f271000-000000010f2f2000 [ 516K] r-x/rwx SM=COW /Applications/Affinity Publisher Beta.app/Contents/MacOS/Affinity Publisher Beta
Application Specific Information:
Validating menu item 'Expand List' with action @selector(convertListToText:)