I am having problems running Nunit tests from teamcity using Nunit build runner.

Until now these tests are run from a machine where the Teamcity and a build agent is hosted.And the tests run as expected on this machine. But we are moving the tests from this machine to another machine and when I try to run tests from this other machine I get the following error

[10:57:25]: 2012-08-01 10:57:25,688 [9052] ERROR JetBrains.BuildServer.NAntLoggers.NUnitLauncher2 - Compatible parser was not found
[10:57:25]: JetBrains.BuildServer.NUnitLauncher.exe #TeamCityImplicit
[10:57:25]: Arguments will be recieved implicitly
[10:57:25]: JetBrains.BuildServer.NUnitLauncher.exe @@ <xml-arguments-file>
[10:57:25]: JetBrains.BuildServer.NUnitLauncher.exe {v1.1|v2.0|mono-1.0|mono-2.0|ANY} {MSIL|x86|x64} Plugin{|Plugin...}
[10:57:25]: Plugin PartCover:
[10:57:25]: /partcover:<path to PartCover.exe> [/partcover-arg:<arg>]* [/partcover-arguments:<arguments line>] [/partcover-platform:<MSIL|x86|x64|NATIVE>@<v1.1|v2.0|ANY|NATIVE>] [/partcover-reg:true]
[10:57:25]: Where:
[10:57:25]: /partcover-arg: argument should be repeated for every argument of PartCover
[10:57:25]: /partcover-arguments: argument should be excaped to be passed to the program as one argument
[10:57:25]: Plugin mstest:
[10:57:25]: /mstestlocation:[ directory name ] /testcontainer:[ file name ] [/isolated] /runconfig:[ file name ]
[10:57:25]: Plugin dotCover:
[10:57:25]: /dotcover:<path to dotCover.exe> [/dotcover-platform:<MSIL|x86|x64|NATIVE>@<v1.1|v2.0|ANY|NATIVE>] [/dotcover-logs:<logs_folder>]
[10:57:25]: Plugin NCover:
[10:57:25]: /ncover:<path to NCover.Console.exe> [/ncover-arg:<arg>]* [/ncover-arguments:<arguments line>] [/ncover-platform:<MSIL|x86|x64|NATIVE>@<v1.1|v2.0|ANY|NATIVE>]
[10:57:25]: Where:
[10:57:25]: /ncover-arg: argument should be repeated for every argument of NCover
[10:57:25]: /ncover-
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