Hatching in older versions was notoriously frustrating. If a boundary had a tiny gap, the software would crash or refuse to hatch. AutoCAD 2006 introduced massive fixes:
I can provide technical workarounds or specific software recommendations based on your goal. Share public link
Legacy Menus (.MNU / .MNC) ---> Customizable User Interface (.CUI) (Fragmented, Text-Based) (Unified, XML-Based Graphical Editor)
Data and Interoperability