problem while try to sync contacts on the server based on z-push(WINDOWS PHONE 7, HTC) RRS feed

  • Question

  • i am a college student .i am developing a server based apahce+php+z-push to sync my mobile phone contacts. my mobile is HTC WINDOWS PHONE 7. it is ok with these commands like Sync or GetItemEstimate,but there is a problem with the command FolderSync, and the errorcode on mobile phone is 85002012. i am so confused and need help. thank you! 
    Tuesday, March 20, 2012 9:09 AM