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If you are getting this error

XYZ.sln(1, 1): error MSB4025: The project file could not be loaded. Data at the root level is invalid. Line 1, position 1.

Look inside the file for invalid Project or EndProject. Usually it is missing an EndProject, because it works in Visual Studio but fails on our Build Server.

I was having this issue.

1. Check Windows Media Player is installed on your box. Control Panel - Windows Features - Media Features - Windows Media Player.
2. Install the Firefox Plugin from here http://www.interoperabilitybridges.com/windows-media-player-firefox-plugin-download
3. Install the Windows Media Player HTML5 Extension for Chrome from here http://www.interoperabilitybridges.com/wmp-extension-for-chrome

Try now

I have been having issues for a few months with Google Play and my Nexus One running MIUI. Whenever I went to Google Play Store I'd get the following error.
 But checking the phone showed that I have the latest version, (I even got the apk and installed manually), also I can't remote install any app that I used to. I wiped Google Play, uninstalled updates, also wiped Google Play Services data, still nothing. I had given it up as because I was on a custom rom, but I noticed the other day that my Google Talk app wasn't working, no matter what I did it wouldn't work.

So decided to reinstall the gapps from. Goo.im Downloads This fixed my Google Talk issues and it fixed my Google Play issues, I assume Google sends down messages using Google Talk, which then uses IPC to call Google Play to start off the downloads, or not. Hope this helps someone else.

I am currently looking at creating Scheduled tasks and I needed to find the permissions needed for creating Schedudled Tasks, usually I would use ProcMon and look for ACCESS_DENIED but it wasn't helping me. Firstly I created a user with zero permissions and ran my tool that would create a Task, it threw an error saying it can't.

runas /user:NoPerms TaskScheduler.exe

I then gave permissions to "%SystemRoot%\Tasks" and it still wouldn't work, after some searching I figured out there is another Tasks folder in "%SystemRoot%\System32\Tasks" That is all that is needed.

I really despise OpenFeint integration in any of my games, I noticed on Play store there was an app called CloseFeint which would disable it but the comments aren't great for it.

I therefore looked into it, it is adding a few entries to my hosts file.

127.0.0.1 api.openfeint.com
127.0.0.1 *.openfeint.com
127.0.0.1 *.scoreloop.com

If you know anything about hosts file, you'll know wildcards aren't supported.

So my solution?

Get this amazing ad blocking hosts app.

https://play.google.com/store/apps/details?id=org.adaway

Then if you click Settings/Your Lists you can add your own, so in there add.

openfeint.com
api.openfeint.com
gree.net
api.gree.net
scoreloop.com
api.scoreloop.com

The gree.net stuff is there because gree.net have recently bought OpenFeint and scoreloop seems to be another one.

Once you have added these, you'll have to re-apply the lists, its also good for blocking ad's in games and easy to disable if there are apps that **need** access to OpenFeint in order to work.

I just came across this issue with upgrading packages in 12.04 before I made the upgrade to 12.10 (since I've been having issues with ATi graphics drivers). On load I couldn't get into my session. What I did was CTRL+ALT+F1 to get to console, logged in and then ran sudo apt-get update && sudo apt-get upgrade This seemed to installed XWindow stuff that was missing that I think was causing my issue.

I tried everything I could think of to get it working. The answer was to disable Internet Connection Sharing.