Hello everyone,
I am currently trying to generate a bilayer membrane for a protein that forms a protein-protein complex after docking. I am using Charmm-gui, and unfortunately, I am encountering the following error during the protein-membrane construction step:
```
OPNLGU> Unit 99 cannot be opened as STEP4_COMPONENTS.STR
* LEVEL 0 WARNING FROM *
* "OPEN" not possible
```
Could anyone provide guidance on why this error is occurring and how I can resolve it?
Thank you for your assistance.