<html><head><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class=""><div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);" class=""><span class="">Louis,</span></div><div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);" class=""><font color="#000000" class=""><br class=""></font><blockquote type="cite" class=""><div class=""><div class=""><div class="">However, it would be useful for me to know the OSes you've been able to reproduce it on.</div></div></div></blockquote><br class=""></div><div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);" class="">All machines I ran this on are macOS 10.14.4 (18E226). I also tested in a virtualized 10.14.2 on the iMac which also crashed.</div><div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);" class=""><br class=""></div><div style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);" class="">The aspect might be circumstantial but in the meantime I was able to trigger the exception also on the MacBookPro15,2/i5, although never with a debug build, only with a release config build (via Xcode Archive). I never tested a debug build on the MacBookPro15,1/i7. On the iMac18,3/i7 I get the exception with both build configs.</div><div class="" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><br class=""></div><span style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);" class="">Thanks again,</span><br class="" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);"><div class="" style="caret-color: rgb(0, 0, 0); color: rgb(0, 0, 0);">Benjamin</div></body></html>