id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	notify_on_close	platform	project
785	opening session w/ sequence after closing a sequence gives traceback	Elaine Meng	Eric Pettersen	"Restoring the attached session in a fresh ChimeraX seems to work fine, but if I restore it, then close the sequence window, then try to restore it again I get a traceback:

Traceback (most recent call last):
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/session.py"", line 485, in restore
self.reset()
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/session.py"", line 361, in reset
sm.reset_state(container, self)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/tools.py"", line 302, in reset_state
tool_inst.delete()
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/seq-view/tool.py"", line 451, in delete
self.alignment.detach_viewer(self)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/seqalign/alignment.py"", line 269, in detach_viewer
self.viewers.remove(viewer)
ValueError: list.remove(x): x not in list

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/cmd_line/tool.py"", line 177, in execute
cmd.run(cmd_text)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/commands/cli.py"", line 2395, in run
result = ci.function(session, **kw_args)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/commands/open.py"", line 104, in open
models = handle_unknown_kw(session.models.open, paths, format=format, name=name, **kw)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/commands/open.py"", line 57, in handle_unknown_kw
return f(*args, **kw)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/models.py"", line 425, in open
session, filenames, format=format, name=name, **kw)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/io.py"", line 439, in open_multiple_data
models, status = open_data(session, fspec, format=format, name=name, **kw)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/io.py"", line 399, in open_data
models, status = open_func(*args, **kw)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/session.py"", line 654, in open
session.restore(stream)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/session.py"", line 515, in restore
self.reset()
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/session.py"", line 361, in reset
sm.reset_state(container, self)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/core/tools.py"", line 302, in reset_state
tool_inst.delete()
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/seq-view/tool.py"", line 451, in delete
self.alignment.detach_viewer(self)
File ""/Users/chimera/Applications/ChimeraX_Daily.app/Contents/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/chimerax/seqalign/alignment.py"", line 269, in detach_viewer
self.viewers.remove(viewer)
ValueError: list.remove(x): x not in list

"	defect	closed	major		Sessions		fixed						all	ChimeraX