[OS X TeX] TeXShop in MacTeX 2018 pretest

[John Collins]

I've newly installed MacTeX 2018 pretest.  That went extremely smoothly, 
and the TeXLive 2018 pretest part of it seems to be working correctly.

However TeXShop.app as installed from the 2018 pretest crashes 
immediately on startup, with the message "TeXShop quit unexpectedly". 
If I start the executable (in Contents/MacOS) from the command line, it 
simply gives a message "Killed" and then stops. Info.plist reports the 
TeXShop version as 3.98

I restored an older version of TeXShop (3.77) from backup; that still 
worked.  Then I installed the newest version (3.99) from the Check for 
Updates menu item.  The new version works.

So there appears to be a problem specifically with the version of 
TeXShop that is is installed by the current MacTeX 2018 pretest 
(mactex-20180304.pkg).  I can provide the crash report if needed.

I am running El Capitan (10.11.6) on an iMac from mid 2010.

John Collins