Cornel, Thanks for confirming my suspicions. I realized I was checking the wrong directory for disk activity. Flex Builder does not probe the Root Folder that Flex Builder presents in Project Properties / Flex Server, it probes the deployment folder, which resides in the workspace.
My test setup is: Root folder: C:\sites\slinnbooks.com\www\production\webapps\ROOT\books\serverSide\examples\blazeDS\echoTest\echoServer\WebContent Root URL: http://localhost:8080/echoServer/ (this works ... serves up content properly) Context Root: /echoServer The server project folder is of course: C:\sites\slinnbooks.com\www\production\webapps\ROOT\books\serverSide\examples\blazeDS\echoTest\echoServer The BlazeDS client folder is C:\sites\slinnbooks.com\www\production\webapps\ROOT\books\serverSide\examples\blazeDS\echoTest\echoClient The Eclipse workspace is: C:\work\eclipseWorkspaces\Europa2 This directory is the deployment folder, and has the necessary Flex xml files in it: C:\work\eclipseWorkspaces\Europa2\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\echoServer\WEB-INF\flex Pressing the Validate Location button generates this error message: Cannot access the web server. The server may not be running, or the web root folder or root URL may be invalid. FileMon shows a hundreds of disk accesses after I click on Validate Location. Here is some of the activity: 10:02:39 AM explorer.exe:3864 OPEN C:\work\eclipseWorkspaces\Europa2\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\echoServer\WEB-INF\flex\:{4c8cc155-6c1e-11d1-8e41-00c04fb9386d}:$DATA NOT FOUND Options: Open Access: Read 10:02:39 AM explorer.exe:3864 OPEN C:\work\eclipseWorkspaces\Europa2\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\echoServer\WEB-INF\flex\:SummaryInformation:$DATA NOT FOUND Options: Open Access: Read 10:02:46 AM explorer.exe:3864 DIRECTORY C:\work\eclipseWorkspaces\Europa2\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\echoServer\WEB-INF\flex\ SUCCESS FileBothDirectoryInformation: services-config.xml 10:02:46 AM explorer.exe:3864 OPEN C:\work\eclipseWorkspaces\Europa2\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\echoServer\WEB-INF\flex\services-config.xml SUCCESS Options: Open Access: Read 10:02:46 AM explorer.exe:3864 OPEN C:\work\eclipseWorkspaces\Europa2\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\echoServer\WEB-INF\flex\services-config.xml:Raec25ph4sudbf0hAaq5ehw3Nf:$DATA NOT FOUND Options: Open Access: Read 10:02:46 AM explorer.exe:3864 OPEN C:\work\eclipseWorkspaces\Europa2\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\echoServer\WEB-INF\flex\services-config.xml\:Docf_SummaryInformation:$DATA NOT FOUND Options: Open Access: Read 10:02:47 AM explorer.exe:3864 QUERY INFORMATION C:\work\eclipseWorkspaces\Europa2\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\echoServer\WEB-INF\flex\services-config.xml SUCCESS Attributes: A 10:02:47 AM explorer.exe:3864 CLOSE 10:02:46 AM explorer.exe:3864 OPEN C:\work\eclipseWorkspaces\Europa2\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\echoServer\WEB-INF\flex\services-config.xml\:Docf_SummaryInformation:$DATA NOT FOUND Options: Open Access: Read C:\work\eclipseWorkspaces\Europa2\.metadata\.plugins\org.eclipse.wst.server.core\tmp2\wtpwebapps\echoServer\WEB-INF\flex\services-config.xml SUCCESS The attempts to write random data to the $DATA forks all fail, yet the necessary files are all there. I'm running Windows XP SP3. Is this a bug? I can reproduce this problem on several Windows systems. Mike
