NVDA logs the following error while trying to read tables in Outlook 2016 (as part of Office 365). Blank lines in the table are announced as blank, but it seems this error is triggered when there is anything in a cell.

ERROR - scriptHandler.executeScript (12:55:40):
error executing script: <bound method MailViewerTreeInterceptor.script_moveByLine_forward of <appModules.outlook.MailViewerTreeInterceptor object at 0x0518D210>> with gesture u'down arrow'
Traceback (most recent call last):
File "scriptHandler.pyc", line 187, in executeScript
File "cursorManager.pyc", line 202, in script_moveByLine_forward
File "cursorManager.pyc", line 134, in caretMovementScriptHelper
File "speech.pyc", line 808, in speakTextInfo
File "browseMode.pyc", line 992, in getControlFieldSpeech
File "textInfos_init.pyc", line 434, in getControlFieldSpeech
File "speech.pyc", line 1131, in getControlFieldSpeech
File "NVDAObjects\window\winword.pyc", line 711, in get
File "NVDAObjects\window\winword.pyc", line 1209, in fetchAssociatedHeaderCellText
File "NVDAObjects\window\winword.pyc", line 1146, in getHeaderCellTrackerForTable
File "comtypesMonkeyPatches.pyc", line 35, in new__getattr__
File "comtypes\client\lazybind.pyc", line 149, in getattr
File "comtypes\automation.pyc", line 664, in _invoke
COMError: (-2146822463, None, (u'Object has been deleted.', u'Microsoft Word', u'wdmain11.chm', 25305, None))