grid-auto-columns: inherit;

Thunderbird 45.2.0 hangs up on this script after Windows 10 update Script: chrome://msktbird/content/mail-msktbird_3.js:566 then had these messages in Error Console Could not read chrome manifest 'file:///C:/Program%20Files%20(x86)/Mozilla%20Thunderbird/chrome.manifest'. Could not read chrome manifest 'jar:file:///C:/Program%20Files%20(x86)/Mozilla%20Thunderbird/extensions/%7B972ce4c6-7e08-4474-a285-3208198ce6fd%7D.xpi!/chrome.manifest'. While creating services from category 'profile-after-change', could not create service for entry 'Sapi Speech Synth', contract ID '@mozilla.org/synthsapi;1' then a bunch of these: Timestamp: 8/12/2016 10:07:21 AM Warning: Unknown property 'grid-auto-columns'. Declaration dropped. Source File: resource://gre-resources/ua.css Line: 175, Column: 19 Source Code: grid-auto-columns: inherit; then this Timestamp: 8/12/2016 10:07:22 AM Warning: Use of Mutation Events is deprecated. Use MutationObserver instead. Source File: chrome://calendar/content/widgets/calendar-widgets.xml Line: 495 Timestamp: 8/12/2016 10:11:26 AM Warning: Error: Script terminated by timeout at: ToolbarIconColor.inferFromText@chrome://messenger/content/toolbarIconColor.js:48:1 ToolbarIconColor.handleEvent@chrome://messenger/content/toolbarIconColor.js:33:9 msk.startmskservice@chrome://msktbird/content/mail-msktbird_3.js:561:13 Source File: chrome://messenger/content/toolbarIconColor.js Line: 48