OpticStudio 22.1.2 contains the following fixes and enhancements.

Feature Enhancements

• Project Directories – support was added for DLL/Sources (.DLL) files. 

Bug Fixes

• ZOS File Format – Fixed an issue where loading a .zos file that includes user defined apertures (UDAs) could lead to a crash. 
• Prepare for OpticsBuilder – Fixed an issue where OpticStudio could freeze when preparing certain non-sequential systems for use in OpticsBuilder using the Prepare for OpticsBuilder tool.