id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	notify_on_close	platform	project
219	cannot save session (even STL only)	Elaine Meng	Greg Couch	"I opened an stl file (attached) and then tried to a save a session with the following command, which gave a traceback:

save session ~/Desktop/stl.cxs
Traceback (most recent call last):
File ""/Users/meng/Desktop/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/session.py"", line 196, in discovery
self.processed[key] = self.process(obj)
File ""/Users/meng/Desktop/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/session.py"", line 214, in process
return copy_state(data, convert=self._add_obj)
File ""/Users/meng/Desktop/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/state.py"", line 152, in copy_state
return _copy(data)
File ""/Users/meng/Desktop/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/state.py"", line 150, in _copy
items = [_copy(o) for o in data]
File ""/Users/meng/Desktop/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/state.py"", line 150, in <listcomp>
items = [_copy(o) for o in data]
File ""/Users/meng/Desktop/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/state.py"", line 143, in _copy
items = [(_copy(k), _copy(v)) for k, v in data.items()]
File ""/Users/meng/Desktop/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/state.py"", line 143, in <listcomp>
items = [(_copy(k), _copy(v)) for k, v in data.items()]
File ""/Users/meng/Desktop/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/state.py"", line 141, in _copy
data.__class__.__module__, data.__class__.__name__))
ValueError: unable to copy chimerax.core.colors.Color objects

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File ""/Users/meng/Desktop/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/cmd_line/gui.py"", line 121, in on_enter
cmd.execute()
File ""/Users/meng/Desktop/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/commands/cli.py"", line 1798, in execute
results.append(ci.function(session, **kw_args))
File ""/Users/meng/Desktop/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/session.py"", line 498, in save
session.save(output)
File ""/Users/meng/Desktop/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/session.py"", line 407, in save
mgr.discovery(self._state_containers)
File ""/Users/meng/Desktop/ChimeraX.app/Contents/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/site-packages/chimerax/core/session.py"", line 198, in discovery
raise ValueError(""error processing key: %s: %s"" % (key, e))
ValueError: error processing key: _UniqueName(('UserColors', 1)): unable to copy chimerax.core.colors.Color objects
"	defect	closed	blocker		Sessions		fixed						all	ChimeraX