Avogadro crashes when opening PDB on OSX

Dear All,
I can fetch a PDB, but if I save and read the PDB file, then Avogadro will crash. PDB 4yc9 as example.
Please find below the crash report:
Many thanks for your help.

Process: Avogadro [11183]
Path: /Applications/Avogadro.app/Contents/MacOS/Avogadro
Identifier: net.sourceforge
Version: ??? (1.2.0)
Code Type: X86-64 (Native)
Parent Process: ??? [1]
Responsible: Avogadro [11183]
User ID: 501

Date/Time: 2019-03-27 22:29:54.699 +0100
OS Version: Mac OS X 10.14.3 (18D109)
Report Version: 12
Bridge OS Version: 3.3 (16P3133)
Anonymous UUID: 5172167C-C374-D362-C58A-2DF93B2E3F78

Sleep/Wake UUID: 7EA6B3C3-A725-4783-8227-7CE969EB074B