datanucleus enhancer＆amp; javaw：＆ldquo;参数不正确＆rdquo;

Error
Thu Oct 21 16:33:57 CDT 2010
Cannot run program "C:Program FilesJavajdk1.6.0_18binjavaw.exe" (in directory "C:agdev"): CreateProcess error=87, The parameter is incorrect

java.io.IOException: Cannot run program "C:Program FilesJavajdk1.6.0_18binjavaw.exe" (in directory "C:agdev"): CreateProcess error=87, The parameter is incorrect
at java.lang.ProcessBuilder.start(Unknown Source)
at com.google.gdt.eclipse.core.ProcessUtilities.launchProcessAndActivateOnError(ProcessUtilities.java:213)
at com.google.appengine.eclipse.core.orm.enhancement.EnhancerJob.runInWorkspace(EnhancerJob.java:154)
at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Caused by: java.io.IOException: CreateProcess error=87, The parameter is incorrect
at java.lang.ProcessImpl.create(Native Method)
at java.lang.ProcessImpl.<init>(Unknown Source)
at java.lang.ProcessImpl.start(Unknown Source)
... 5 more