Running python code without debugging only works once

[b-hahn]

Environment data

VS Code version: 1.18
Python Extension version: 0.8.0
Python Version: 2.7.14
OS and version: Ubuntu 14.04

Actual behavior

As mentioned in my comments in #58 , I can only run the 'Start without Debugging' command once, after which I can neither re-run in debug or non-debug mode unless I restart VS Code.

Steps to reproduce:

• Occurs for any python file on my computer, i.e. simply press F5 or Ctrl-F5.

Logs

Output from Python output panel
Nothing related to the problem.

Output from Console window (Help->Developer Tools menu)

[Extension Host] rejected promise not handled within 1 second        console.ts:123
t.log @ console.ts:123
t._logExtensionHostMessage @ extensionHost.ts:377
(anonymous) @ extensionHost.ts:202
emitTwo @ events.js:106
emit @ events.js:194
process.nextTick @ internal/child_process.js:766
_combinedTickCallback @ internal/process/next_tick.js:73
_tickCallback @ internal/process/next_tick.js:104
 
spawn ctags ENOENT: Error: spawn ctags ENOENT                          shell.ts:459
	at exports._errnoException (util.js:1050:11)
	at Process.ChildProcess._handle.onexit (internal/child_process.js:193:32)
	at onErrorNT (internal/child_process.js:367:16)
	at _combinedTickCallback (internal/process/next_tick.js:80:11)
	at process._tickCallback (internal/process/next_tick.js:104:9)
e.onUnexpectedError @ shell.ts:459
(anonymous) @ shell.ts:419
e.onUnexpectedError @ errors.ts:119
o @ errors.ts:138
e.$onUnexpectedError @ mainThreadErrors.ts:26
e.invoke @ abstractThreadService.ts:41
e._invokeHandler @ rpcProtocol.ts:109
e._receiveOneMessage @ rpcProtocol.ts:96
(anonymous) @ rpcProtocol.ts:32
(anonymous) @ rpcProtocol.ts:157
e.invoke @ callbackList.ts:36
e.fire @ event.ts:123
(anonymous) @ ipc.net.ts:82
emitOne @ events.js:96
emit @ events.js:191
readableAddChunk @ _stream_readable.js:178
Readable.push @ _stream_readable.js:136
onread @ net.js:560
console.ts:123 [Extension Host] activating extension

Thanks!

[DonJayamanne]

Duplicate #25