Dear Chimera-X users! I got the following error on my iMAC equipped with Intel CPU after an attempt to save a Chimera-x (ver 1.71) session containing a loaded netcdf trajectory with 7500 frames (with the same system containing only 5000 frames, ain't no problems !!). Yours with thanks Enrico Traceback (most recent call last): File "/Applications/ ChimeraX-1.7.1.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/chimerax/save_command/dialog.py", line 127, in <lambda> lambda *args, ses=session: show_save_file_dialog(ses), tool_tip="Save output file", ^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Applications/ ChimeraX-1.7.1.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/chimerax/save_command/dialog.py", line 138, in show_save_file_dialog _dlg.display(session, **kw) File "/Applications/ ChimeraX-1.7.1.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/chimerax/save_command/dialog.py", line 62, in display run(session, cmd) File "/Applications/ ChimeraX-1.7.1.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/chimerax/core/commands/run.py", line 49, in run results = command.run(text, log=log, return_json=return_json) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Applications/ ChimeraX-1.7.1.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/chimerax/core/commands/cli.py", line 2908, in run result = ci.function(session, **kw_args) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Applications/ ChimeraX-1.7.1.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/chimerax/save_command/cmd.py", line 86, in cmd_save Command(session, registry=registry).run(provider_cmd_text, log=log) File "/Applications/ ChimeraX-1.7.1.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/chimerax/core/commands/cli.py", line 2908, in run result = ci.function(session, **kw_args) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Applications/ ChimeraX-1.7.1.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/chimerax/save_command/cmd.py", line 101, in provider_save saver_info.save(session, path, **provider_kw) File "/Applications/ ChimeraX-1.7.1.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/chimerax/core_formats/__init__.py", line 95, in save return cxs_save(session, path, **kw) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/Applications/ ChimeraX-1.7.1.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/chimerax/core/session.py", line 912, in save session.save(output, version=version, include_maps=include_maps) File "/Applications/ ChimeraX-1.7.1.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/chimerax/core/session.py", line 641, in save fserialize(stream, data) File "/Applications/ ChimeraX-1.7.1.app/Contents/Library/Frameworks/Python.framework/Versions/3.11/lib/python3.11/site-packages/chimerax/core/serialize.py", line 76, in msgpack_serialize stream.write(packer.pack(obj)) ^^^^^^^^^^^^^^^^ File "msgpack/_packer.pyx", line 294, in msgpack._cmsgpack.Packer.pack File "msgpack/_packer.pyx", line 300, in msgpack._cmsgpack.Packer.pack File "msgpack/_packer.pyx", line 297, in msgpack._cmsgpack.Packer.pack File "msgpack/_packer.pyx", line 231, in msgpack._cmsgpack.Packer._pack File "msgpack/_packer.pyx", line 231, in msgpack._cmsgpack.Packer._pack File "msgpack/_packer.pyx", line 285, in msgpack._cmsgpack.Packer._pack File "stringsource", line 67, in cfunc.to_py.__Pyx_CFunc_object____object___to_py.wrap File "src/_serialize.pyx", line 253, in chimerax.core._serialize._encode_ext File "msgpack/_packer.pyx", line 294, in msgpack._cmsgpack.Packer.pack File "msgpack/_packer.pyx", line 300, in msgpack._cmsgpack.Packer.pack File "msgpack/_packer.pyx", line 297, in msgpack._cmsgpack.Packer.pack File "msgpack/_packer.pyx", line 231, in msgpack._cmsgpack.Packer._pack File "msgpack/_packer.pyx", line 264, in msgpack._cmsgpack.Packer._pack File "msgpack/_packer.pyx", line 285, in msgpack._cmsgpack.Packer._pack File "stringsource", line 67, in cfunc.to_py.__Pyx_CFunc_object____object___to_py.wrap File "src/_serialize.pyx", line 226, in chimerax.core._serialize._encode_ext File "msgpack/_packer.pyx", line 294, in msgpack._cmsgpack.Packer.pack File "msgpack/_packer.pyx", line 300, in msgpack._cmsgpack.Packer.pack File "msgpack/_packer.pyx", line 297, in msgpack._cmsgpack.Packer.pack File "msgpack/_packer.pyx", line 231, in msgpack._cmsgpack.Packer._pack File "msgpack/_packer.pyx", line 202, in msgpack._cmsgpack.Packer._pack ValueError: bytes object is too large ValueError: bytes object is too large File "msgpack/_packer.pyx", line 202, in msgpack._cmsgpack.Packer._pack *See log for complete Python traceback.*