If any of the changes in the TFS (source control system) contain 'merged' actions, the QuickBuild checkout step fails to recognize it and fails as a result.
Following is the exception from the logs.
23:43:08,153 [master>Checkout
Latest@TFS2010WEB1:8810] INFO - Getting changes since build '1.1.279'...
23:43:16,263 [master>Checkout
Latest@TFS2010WEB1:8810] ERROR - Error pumping stream.
com.pmease.quickbuild.plugin.scm.helper.ScmException: Unknown action 'merge, edit', you may need change your TFS to English version.
at com.pmease.quickbuild.plugin.scm.tfs.ActionMul.getAction(ActionMul.java:83)
at com.pmease.quickbuild.plugin.scm.tfs.ChangeLogConsumer.parseChangeLog(ChangeLogConsumer.java:185)
at com.pmease.quickbuild.plugin.scm.tfs.ChangeLogConsumer.consume(ChangeLogConsumer.java:60)
at com.pmease.quickbuild.execution.LineConsumer.processBuffer(LineConsumer.java:86)
at com.pmease.quickbuild.execution.LineConsumer.write(LineConsumer.java:73)
at java.io.OutputStream.write(Unknown Source)
at com.pmease.quickbuild.execution.ProcessStreamPumper$1.run(ProcessStreamPumper.java:87)
at java.lang.Thread.run(Unknown Source)