Pymol crashes on Mac when NRGsuite is installed

[jwlampe]

I’ve encountered an issue while installing NRGsuite. I got the suite from the NRGlab website; I’m posting here since their GitHub repository doesn’t have issues enabled, and I’m hoping that you’ll be able to help as a (former?) member of the group.

The details: I attempted the installation on my 2014-era MacBook Pro, running fully updated Big Sur (11.6.5). My pymol is a fresh install via Homebrew. If I attempt to install NRGsuite without python_tk installed, the installation succeeds, but the plugin fails to load, giving the error “No module named '_tkinter’”. After installing python_tk, pymol hangs on exiting, and crashes on attempted restart. Here’s a portion of stderr:

0   CoreFoundation         ...   __exceptionPreprocess + 242
1   libobjc.A.dylib        ...  objc_exception_throw + 48
2   CoreFoundation         ...  -[NSObject(NSObject) __retain_OA] + 0
3   CoreFoundation         ...   ___forwarding___ + 1448
4   CoreFoundation         ...  _CF_forwarding_prep_0 + 120
5   libtk8.6.dylib         ...  etRGBA + 50
6   libtk8.6.dylib         ...  SetCGColorComponents + 124
7   libtk8.6.dylib         ...  TkpGetColor + 543
8   libtk8.6.dylib         ...  Tk_GetColor + 143
... etc...

libc++abi: terminating with uncaught exception of type NSException
Abort trap: 6

I’m wondering if this might be some sort of module version compatibility thing. Anyway, I’m hoping to be able to find a solution. It’d be a shame if folks with somewhat older Macs couldn’t use the programs. I’d be happy to help in any way - more error output, trying solutions, whatever.

Thanks!