Strange Error

Hi,

We're getting the error below when trying to run a build.  What does "Already running a build <number> false" mean?  The error message is confusing.

-T

-------------------------------------------------------------------------------------------------------------------------------------------------





Build 'Staf XPS-N4Client Trunk :: XPS-N4 VS Main Test Part8' #480 rev.120115
Started 'Tue Jan 03 00:50:14 PST 2012' on 'n4tc2k8vm02 (Windows 2008 R2 64-bit)' by 'Staf XPS-N4Client Trunk :: XPS-N4 Validation, build #1515 rev.120096'
Finished 'Tue Jan 03 00:50:31 PST 2012' with status 'UNKNOWN Canceled'
TeamCity URL http://tc.navis.com/viewLog.html?buildId=336947&buildTypeId=bt961


[00:50:14]: bt961
[00:50:14]: Checking for changes
[00:50:31]: jetbrains.buildServer.xmlrpc.RemoteCallException: Call http://10.47.101.207:9090/RPC2 buildAgent.run: org.apache.xmlrpc.XmlRpcException: java.lang.Exception: jetbrains.buildServer.AlreadyRunningBuildException: Already running a build 336556 false
jetbrains.buildServer.xmlrpc.RemoteCallException: Call http://10.47.101.207:9090/RPC2 buildAgent.run: org.apache.xmlrpc.XmlRpcException: java.lang.Exception: jetbrains.buildServer.AlreadyRunningBuildException: Already running a build 336556 false
 at jetbrains.buildServer.xmlrpc.AbstractXmlRpcTarget.call(AbstractXmlRpcTarget.java:91)
 at jetbrains.buildServer.serverSide.impl.XmlRpcBasedAgent$AgentTargetProxy.call(XmlRpcBasedAgent.java:296)
 at jetbrains.buildServer.serverSide.impl.XmlRpcBasedAgent.runBuild(XmlRpcBasedAgent.java:249)
 at jetbrains.buildServer.serverSide.impl.auth.SecuredBuildAgent.runBuild(SecuredBuildAgent.java:27)
 at jetbrains.buildServer.serverSide.impl.BuildStarter$1.run(BuildStarter.java:29)
 at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
 at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
 at java.util.concurrent.FutureTask.run(Unknown Source)
 at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
 at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
 at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.xmlrpc.XmlRpcException: java.lang.Exception: jetbrains.buildServer.AlreadyRunningBuildException: Already running a build 336556 false
 at org.apache.xmlrpc.XmlRpcClientResponseProcessor.decodeException(XmlRpcClientResponseProcessor.java:104)
 at org.apache.xmlrpc.XmlRpcClientResponseProcessor.decodeResponse(XmlRpcClientResponseProcessor.java:71)
 at org.apache.xmlrpc.XmlRpcClientWorker.execute(XmlRpcClientWorker.java:73)
 at org.apache.xmlrpc.TCXmlRpcClient$1.execute(TCXmlRpcClient.java:89)
 at org.apache.xmlrpc.XmlRpcClient.execute(XmlRpcClient.java:194)
 at org.apache.xmlrpc.XmlRpcClient.execute(XmlRpcClient.java:185)
 at org.apache.xmlrpc.XmlRpcClient.execute(XmlRpcClient.java:178)
 at jetbrains.buildServer.xmlrpc.impl.CommonsXmlRpcTargetImpl$1.execute(CommonsXmlRpcTargetImpl.java:70)
 at jetbrains.buildServer.xmlrpc.AbstractXmlRpcTarget.call(AbstractXmlRpcTarget.java:81)
 ... 10 more


[00:50:31]: Build cancelled