That is an error in the browser style used to format genealogy data fort display. It is usually caused by using an out-dated version of the "Default Format" (or other formats). I see you are both on latest version (3.2(6), and I am working on 3.3 to post soon). When you updated, did you do a clean update?. Here are steps that should fix it:
1. Make sure you are actually running GEDitCOM II 3.2, build 6. To see, use the "About GEDitCOM II" menu command. On my computer I often have multiple versions of GEDitCOM II from prior development and testing. When I double click a file, the MacOS has an uncanny ability to open the worst one. If you only have one copy of GEDitCOM II, this problem will not occur, but it is worth a check.
2. Next use Settings... menu command and click on "Restore Resources". When window opens click on "Clean Update"
3. Finally (maybe not needed) select "Default Format" from the "Browser Styles" menu in the "Extensions" menu.
If these steps do not fix it, let me know.
John Nairn