Unable to trigger a build through command

I am calling this command as a prebuild event from one of the project

"C:\Program Files (x86)\Microsoft Visual Studio 10.0\Common7\IDE\tfsbuild" start "tfs-server" "project name" "Build definition name"

Error: Microsoft (R) TfsBuild Version 10.0.0.0 for Microsoft Visual Studio v10.0 Copyright (c) Microsoft Corporation. All rights reserved.

TF215036: The build request cannot be queued at or below position 1 on build con troller Euphrates. The resulting position would be 2.

On tfs their is not a single build running

Please开发者_运维技巧 help thanks

Take a Look at this post, they have the same problem, maybe it could help you.

http://blogs.msdn.com/b/jpricket/archive/2007/05/16/visual-studio-2005-client-starting-builds-on-an-orcas-server-and-build-machine.aspx

or

http://social.msdn.microsoft.com/forums/en-US/tfsgeneral/thread/0b37237c-c485-4667-8829-1da92e464546