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I have a MacBook Pro (Retina, Mid 2012) with OS X El Capitan v. 10.11.6. I use xmgrace regularly for my work, and a week ago, I had no problems with it. On Sept. 20, 2016 I did 'brew update, outdated, upgrade, cleanup, prune, doctor' and now can no longer open xmgrace. The error message is:
Warning: Widget must be a VendorShell. Warning: Fatal Error: _XmGetDefaultDisplay cannot be used prior to VendorS.Initialize, returns NULL
Oops! Got SIGSYS
Please use "Help/Comments" to report the bug. Abort trap: 6
I have XQuartz 2.7.9, openmotif 2.3.4, grace 5.1.25_1. If I type 'xclock', that works. I have spent (too many) hours researching the web for a solution, but have not found anything that fixed this problem. I think it has to do with the order in which Xm, Xt, and X11 are linked when compiling openmotif with homebrew, but I haven't figured out how to fix it. I noticed several other authors have asked the same or similar question in this forum, but no one has posted an answer yet. If anyone out there can help with this problem, please let us know! Gratefully yours,
4Can you expand on this a little? – fixer1234 – 2016-09-28T19:45:55.430
Sorry for my delay in responding. I reproduce here the description of qtgrace from the website https://sourceforge.net/projects/qtgrace/ "QtGrace is a version of Grace based on the Qt-SDK by The Qt Project www.qt.io . QtGrace/Grace is a program to display or plot data, analyze data and prepare it for printing. Using QtGrace is to run Grace natively on Windows, Mac OS X and Linux."
– LTB – 2016-10-06T04:57:46.317