[poutine]

Delete the userinfo.txt file (that's where auth info is stored)
Then please try setting IE as your default browser and see if it works that way. Also, please ensure the addon version your running is 1.0.11 or higher, if it's not please update the addon's.
Actually - grab the git version which has more auth info output -- https://github.com/spudsdude/XBMC-Flicks/zipball/master
open that zip file, extract the contents into the xbmcflicks plugin folder

Deleted userinfo.txt - but, FYI, it's been empty the entire time
Initially tried just setting IE to default. Same result - IE called to authorize the plugin, click authorize, continue to netflix, close IE. CNTRL-TAB back to XBMC, hangs on the loading directory dialogue.
Then tried the zip file above, and got a script error when clicking on my instant queue (IE never launches)

In the xbmc.log you'll find a string that reads
Notice: Token result was: BLABLALLA
Notice: If the timestamp shows invalid, your computers date/time is off, sync it to an NTP server or fix it by setting the correct values

remove the string "Token result was: BLABLALLA" (the BLABLALLA part will be your user data or an error, leave it if it's an error)

These items don't appear in the log, either before I updated the plugin (log the same as my original post), and after updating the plugin (perhaps the errors below happen before that...). Log after updating the plugin from your zip file:

Code:

13:42:47 T:3396 M:2340487168  NOTICE: load settings...
13:42:47 T:3396 M:2340372480  NOTICE: special://profile/ is mapped to: special://masterprofile/
13:42:47 T:3396 M:2340360192  NOTICE: loading special://masterprofile/guisettings.xml
13:42:47 T:3396 M:2339897344  NOTICE: Getting hardware information now...
13:42:47 T:3396 M:2339889152  NOTICE: Checking resolution 12
13:42:47 T:3396 M:2339831808  NOTICE: Loading player core factory settings from special://xbmc/system/playercorefactory.xml.
13:42:47 T:3396 M:2339799040  NOTICE: Loaded playercorefactory configuration
13:42:47 T:3396 M:2339790848  NOTICE: Loading player core factory settings from special://profile/playercorefactory.xml.
13:42:47 T:3396 M:2339766272  NOTICE: Loaded playercorefactory configuration
13:42:47 T:3396 M:2339749888  NOTICE: Loaded advancedsettings.xml from special://profile/advancedsettings.xml
13:42:47 T:3396 M:2339745792  NOTICE: Contents of special://profile/advancedsettings.xml are...
                                            <advancedsettings>
                                              <videoextensions>
                                                <add>.html</add>
                                              </videoextensions>
                                            </advancedsettings>
13:42:47 T:3396 M:2339737600  NOTICE: Getting hardware information now...
13:42:47 T:3396 M:2339737600  NOTICE: Checking resolution 12
13:42:47 T:3396 M:2339737600  NOTICE: Default DVD Player: dvdplayer
13:42:47 T:3396 M:2339737600  NOTICE: Default Video Player: dvdplayer
13:42:47 T:3396 M:2339737600  NOTICE: Default Audio Player: paplayer
13:42:47 T:3396 M:2339909632  NOTICE: Loading media sources from special://masterprofile/sources.xml
13:42:48 T:3396 M:2328350720  NOTICE: initializing playlistplayer
13:42:48 T:3396 M:2328338432  NOTICE: DONE initializing playlistplayer
13:42:48 T:3396 M:2320678912  NOTICE: initialize done
13:42:48 T:3396 M:2320678912  NOTICE: Running the application...
13:42:48 T:3396 M:2320658432  NOTICE: ES: Starting event server
13:42:48 T:1584 M:2320576512  NOTICE: ES: Starting UDP Event server on 127.0.0.1:9777
13:42:48 T:1584 M:2320568320  NOTICE: UDP: Listening on port 9777
13:42:49 T:3856 M:2311331840  NOTICE: -->Python Interpreter Initialized<--
13:42:52 T:2128 M:2301775872 WARNING: XFILE::CFileFactory::CreateLoader - Unsupported protocol(addons) in addons://more/executable.tbn
13:42:56 T:1152 M:2305519616  NOTICE: -->Python Interpreter Initialized<--
13:43:13 T:2260 M:2302689280  NOTICE: -->Python Interpreter Initialized<--
13:43:22 T:3396 M:2302775296 WARNING: XFILE::CVideoDatabaseDirectory::GetLabel - Unknown nodetype requested 0
13:43:35 T:3172 M:2375577600  NOTICE: -->Python Interpreter Initialized<--
13:43:39 T:3172 M:2370789376  NOTICE: ##########################################################
13:43:39 T:3172 M:2370789376  NOTICE: Mode: 0
13:43:39 T:3172 M:2370789376  NOTICE: Arg1: 0
13:43:39 T:3172 M:2370789376  NOTICE: Arg2:
13:43:39 T:3172 M:2370789376  NOTICE: ##########################################################
13:43:39 T:3396 M:2370691072 WARNING: XFILE::CVideoDatabaseDirectory::GetLabel - Unknown nodetype requested 6
13:43:41 T:3140 M:2368847872  NOTICE: -->Python Interpreter Initialized<--
13:43:41 T:3140 M:2367860736  NOTICE: ##########################################################
13:43:41 T:3140 M:2367860736  NOTICE: Mode: 0
13:43:41 T:3140 M:2367860736  NOTICE: Arg1: 0
13:43:41 T:3140 M:2367860736  NOTICE: Arg2: ?mode=0
13:43:41 T:3140 M:2367860736  NOTICE: ##########################################################
13:43:41 T:3396 M:2367901696 WARNING: XFILE::CVideoDatabaseDirectory::GetLabel - Unknown nodetype requested 6
13:43:44 T:1328 M:2371067904  NOTICE: -->Python Interpreter Initialized<--
13:43:44 T:1328 M:2368425984  NOTICE: ##########################################################
13:43:44 T:1328 M:2368425984  NOTICE: Mode: 10
13:43:44 T:1328 M:2368425984  NOTICE: Arg1: 0
13:43:44 T:1328 M:2368425984  NOTICE: Arg2: ?mode=10
13:43:44 T:1328 M:2368425984  NOTICE: ##########################################################
13:43:44 T:1328 M:2368421888  NOTICE: root folder: special://home/addons/plugin.video.xbmcflicks/
13:43:44 T:1328 M:2368421888  NOTICE: working folder: special://profile/addon_data/plugin.video.xbmcflicks/
13:43:44 T:1328 M:2368421888  NOTICE: real link path: C:\Documents and Settings\[user]\Application Data\XBMC\userdata\addon_data\plugin.video.xbmcflicks\links\
13:43:44 T:1328 M:2368421888  NOTICE: image folder: special://home/addons/plugin.video.xbmcflicks/resources/
13:43:44 T:1328 M:2368421888  NOTICE: userinfo folder: special://profile/addon_data/plugin.video.xbmcflicks/
13:43:44 T:1328 M:2368397312  NOTICE: USER INFO FILE LOC: special://profile/addon_data/plugin.video.xbmcflicks/userinfo.txt
13:43:44 T:1328 M:2368393216  NOTICE: couldn't load user information from userinfo.properties file
13:43:44 T:1328 M:2368393216  NOTICE: .. getAuth called ..
13:43:44 T:1328 M:2368393216  NOTICE: OSX Setting is set to: False
13:43:44 T:1328 M:2368393216  NOTICE: .. user configured ..
13:43:45 T:1328 M:2369638400   ERROR: Error Type: exceptions.NameError
13:43:45 T:1328 M:2369638400   ERROR: Error Contents: global name 're' is not defined
13:43:45 T:1328 M:2369404928   ERROR: Traceback (most recent call last):
                                              File "C:\Documents and Settings\[user]\Application Data\XBMC\addons\plugin.video.xbmcflicks\default.py", line 26, in ?
                                                import resources.lib.menu as menu
                                              File "C:\Documents and Settings\[user]\Application Data\XBMC\addons\plugin.video.xbmcflicks\resources\lib\menu.py", line 353, in ?
                                                getInstantQueue()
                                              File "C:\Documents and Settings\[user]\Application Data\XBMC\addons\plugin.video.xbmcflicks\resources\lib\iqueue.py", line 1003, in getInstantQueue
                                                initApp()
                                              File "C:\Documents and Settings\[user]\Application Data\XBMC\addons\plugin.video.xbmcflicks\resources\lib\iqueue.py", line 998, in initApp
                                                user = getAuth(netflixClient,VERBOSE_USER_LOG)
                                              File "C:\Documents and Settings\[user]\Application Data\XBMC\addons\plugin.video.xbmcflicks\resources\lib\iqueue.py", line 60, in getAuth
                                                (tok, url) = netflix.user.getRequestToken()
                                              File "C:\Documents and Settings\[user]\Application Data\XBMC\addons\plugin.video.xbmcflicks\resources\lib\Netflix.py", line 46, in getRequestToken
                                                requestToken = oauth.OAuthToken.from_string(response.read())
                                              File "C:\Documents and Settings\[user]\Application Data\XBMC\addons\plugin.video.xbmcflicks\resources\lib\oauth.py", line 142, in from_string
                                                if re.search(r"(invalid|error|date|time)", strResult, re.DOTALL | re.IGNORECASE | re.MULTILINE):
                                            NameError: global name 're' is not defined
13:43:45 T:3396 M:2369425408   ERROR: XFILE::CDirectory::GetDirectory - Error getting plugin://plugin.video.xbmcflicks/?mode=10
13:43:45 T:3396 M:2369425408   ERROR: CGUIMediaWindow::GetDirectory(plugin://plugin.video.xbmcflicks/?mode=10) failed
13:43:45 T:3708 M:2368958464  NOTICE: -->Python Interpreter Initialized<--
13:43:46 T:3708 M:2368057344  NOTICE: ##########################################################
13:43:46 T:3708 M:2368057344  NOTICE: Mode: 0
13:43:46 T:3708 M:2368057344  NOTICE: Arg1: 0
13:43:46 T:3708 M:2368057344  NOTICE: Arg2: ?mode=0
13:43:46 T:3708 M:2368057344  NOTICE: ##########################################################
13:43:46 T:3396 M:2367926272 WARNING: XFILE::CVideoDatabaseDirectory::GetLabel - Unknown nodetype requested 6