Stacktrace when viewing windows agent.

2011-12-12 17:21:22,082 INFO [qtp1153274506-521] [AccessLogFilter] admin GET http://localhost:8085/admin/agent/viewAgent.action?agentId=131076 122638kb
2011-12-12 17:21:22,312 INFO [qtp1153274506-521] [SystemInfo] Can't get free disk space. A warning returned.
java.io.IOException: Command line returned OS error code '1' for command [df, -k, C:/Users/Bamboo/bamboo-agent-home]
at org.apache.commons.io.FileSystemUtils.performCommand(FileSystemUtils.java:419)
at org.apache.commons.io.FileSystemUtils.freeSpaceUnix(FileSystemUtils.java:323)
at org.apache.commons.io.FileSystemUtils.freeSpaceOS(FileSystemUtils.java:196)
at org.apache.commons.io.FileSystemUtils.freeSpaceKb(FileSystemUtils.java:166)
at com.atlassian.bamboo.configuration.SystemInfo.getFreeDiskSpace(SystemInfo.java:286)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at ognl.OgnlRuntime.invokeMethod(OgnlRuntime.java:778)
at ognl.OgnlRuntime.getMethodValue(OgnlRuntime.java:1297)
at ognl.ObjectPropertyAccessor.getPossibleProperty(ObjectPropertyAccessor.java:60)
at ognl.ObjectPropertyAccessor.getProperty(ObjectPropertyAccessor.java:147)
at com.opensymphony.xwork.util.OgnlValueStack$ObjectAccessor.getProperty(OgnlValueStack.java:57)
at ognl.OgnlRuntime.getProperty(OgnlRuntime.java:1940)
at ognl.ASTProperty.getValueBody(ASTProperty.java:114)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
at ognl.SimpleNode.getValue(SimpleNode.java:258)
at ognl.ASTChain.getValueBody(ASTChain.java:141)
at ognl.SimpleNode.evaluateGetValueBody(SimpleNode.java:212)
at ognl.SimpleNode.getValue(SimpleNode.java:258)
at ognl.Ognl.getValue(Ognl.java:494)
at com.opensymphony.xwork.util.OgnlUtil.getValue(OgnlUtil.java:300)
at com.opensymphony.xwork.util.OgnlValueStack.findValue(OgnlValueStack.java:258)
at com.opensymphony.xwork.util.TextParseUtil.translateVariables(TextParseUtil.java:151)
at com.opensymphony.xwork.util.TextParseUtil.translateVariables(TextParseUtil.java:101)
at com.opensymphony.xwork.util.TextParseUtil.translateVariables(TextParseUtil.java:74)
at com.opensymphony.webwork.components.Component.findValue(Component.java:296)
at com.opensymphony.webwork.components.UIBean.evaluateParams(UIBean.java:823)
at com.opensymphony.webwork.components.UIBean.end(UIBean.java:591)
at com.opensymphony.webwork.views.freemarker.tags.CallbackWriter.afterBody(CallbackWriter.java:65)
at freemarker.core.Environment.visit(Environment.java:301)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:130)
at freemarker.core.Environment.visit(Environment.java:210)
at freemarker.core.Environment.visit(Environment.java:395)
at freemarker.core.BodyInstruction.accept(BodyInstruction.java:93)
at freemarker.core.Environment.visit(Environment.java:210)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:210)
at freemarker.core.Macro$Context.runMacro(Macro.java:172)
at freemarker.core.Environment.visit(Environment.java:603)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:106)
at freemarker.core.Environment.visit(Environment.java:210)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:210)
at freemarker.core.IfBlock.accept(IfBlock.java:82)
at freemarker.core.Environment.visit(Environment.java:210)
at freemarker.core.Environment.visit(Environment.java:395)
at freemarker.core.BodyInstruction.accept(BodyInstruction.java:93)
at freemarker.core.Environment.visit(Environment.java:210)
at freemarker.core.MixedContent.accept(MixedContent.java:92)
at freemarker.core.Environment.visit(Environment.java:210)
at freemarker.core.Macro$Context.runMacro(Macro.java:172)
at freemarker.core.Environment.visit(Environment.java:603)
at freemarker.core.UnifiedCall.accept(UnifiedCall.java:106)
at freemarker.core.Environment.visit(Environment.java:210)
at freemarker.core.MixedContent.accept(MixedContent.java:92)