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Re: [ferret_users] PyFerret on Mac : still some problems :-(

I have seen differences in displayed window behavior between using Sierra and using High Sierra as the OS.  Last I had seen displayed windows were not working at all for Sierra (exactly the error messages Olivier has shown), but were working fine (except for a warning message with each new window) for High Sierra.  This issue is either in the Qt package or the OS.  Possibly updating to the latest Qt/PyQt (if not there already) may help.

I do not recommend using the prebuilt distribution for Mac; I probably will not provide that package in the future.  Instead, as Ryo mentions, use the conda build or build it yourself using Homebrew packages.

Kind regards,

On Wed, Aug 29, 2018 at 8:42 PM Ryo Furue <furue@xxxxxxxxxx> wrote:
Hi Olivier,

On Wed, Aug 29, 2018 at 6:06 PM Olivier Marti <olivier.marti@xxxxxxxxxxxx> wrote:
On Mac, PyFerret seems enable to use an other window than window 1. SET WINDOW/NEW or SET WINDOW 2 crash : 

objc[77534]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called.
objc[77534]: +[__NSPlaceholderDate initialize] may have been in progress in another thread when fork() was called. We cannot safely call it or ignore it in the fork() child process. Crashing instead. Set a breakpoint on objc_initializeAfterForkError to debug.

Tested with PyFerret 7.4 on Mac OS X Sierra, with python 3.7 and PyQt from HomeBrew

I summarized two methods of installation in this thread:

One of them shows the problem you see, but the other doesn't.

Specifically, on one of my Mac computers, I used the first method: you install the binary PyFerret package (.tar.gz).  That gives the same error as yours.

On the other Mac computer of mine, I switched to the second method: you install miniconda and install PyFerret through conda.  "Set window/new" works on this one.

Hope this helps,

Karl M. Smith, Ph.D.
JISAO Univ. Wash. and PMEL NOAA
"The contents of this message are mine personally and do
not necessarily reflect any position of the Government
or the National Oceanic and Atmospheric Administration."

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