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failed: Cannot read property 'overrideCopy' of undefined after upgrade to 0.10.12

See original GitHub issue

BUG REPORT

What happened:

workbench.main.js:sourcemap:249 [Extension Host] Activating extension `vscodevim.vim` failed:  Cannot read property 'overrideCopy' of undefined
t.log @ workbench.main.js:sourcemap:249
[Extension Host] Here is the error stack:  TypeError: Cannot read property 'overrideCopy' of undefined
	at ConfigurationClass.reload (/Users/camper42/.vscode/extensions/vscodevim.vim-0.10.12/out/src/configuration/configuration.js:272:95)
	at new ConfigurationClass (/Users/camper42/.vscode/extensions/vscodevim.vim-0.10.12/out/src/configuration/configuration.js:202:14)
	at Object.<anonymous> (/Users/camper42/.vscode/extensions/vscodevim.vim-0.10.12/out/src/configuration/configuration.js:358:25)
	at Object.<anonymous> (/Users/camper42/.vscode/extensions/vscodevim.vim-0.10.12/out/src/configuration/configuration.js:360:3)
	at Module._compile (module.js:571:32)
	at Object.Module._extensions..js (module.js:580:10)
	at Module.load (module.js:488:32)
	at tryModuleLoad (module.js:447:12)
	at Function.Module._load (module.js:439:3)
	at Function.J.X.t.getExtensionPathIndex.then.o._load (/Applications/Visual Studio Code.app/Contents/Resources/app/out/vs/workbench/node/extensionHostProcess.js:490:709)

What did you expect to happen: no error

How to reproduce it (as minimally and precisely as possible): upgrade to 0.10.12 and reload vs code

Environment: Mac