Dear PyMOL Community,
I am encountering a version compatibility issue with PyMOL and would appreciate
your insights. The problem occurs when opening legacy session files (.pse)
created in older PyMOL versions in newer releases (3.1.5.1).
Observed Behavior:
In the original environment (older PyMOL):
Session contains objects with
simultaneous cartoon and surface representations
Both have active transparency settings
ray command correctly renders both semi-transparent elements(ray by
original version.png)
In newer PyMOL versions (3.1.5.1):
Session loads without errors
ray command execution causes cartoon representation to
completely disappear(ray by new version.png)
surface and other representations (e.g., sticks) render normally
Transparency settings appear preserved in GUI but ignored during rendering
The following prompt message appears when loading the PSE file:
PyMOL(TM) 3.1.5.1 - Incentive Product
Copyright (C) Schrodinger, LLC
This Executable Build integrates and extends Open-Source PyMOL.
Detected OpenGL version 2.1. Shaders available.
Tessellation shaders not available
Detected GLSL version 1.20.
OpenGL graphics engine:
GL_VENDOR: Apple
GL_RENDERER: Apple M2
GL_VERSION: 2.1 Metal - 76.3
License Expiry date: 2025-12-01
Appreciate any guidance on resolving this rendering discrepancy while
maintaining visualization integrity across versions.
Best regards,
[eva]
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