Sounds like you need to make sure that everything has its own port number.  You can't listen (for instance) on port 8400 if you application server is also listening there.Tom

How about the Flex and FlashBuilder forums:  http://forums.adobe.com/community/flex

Hari,If you are having Flash Builder problems, this probably isn't the place to find help.  This forums is for discussion of LiveCycle Data Services, which is a server product.Sorry.Tom

Brad,This is the wrong forum to ask a LiveCycle ES question.  This forum is for discussion of LiveCycle Data Services which connects Flex applications to services and data.Tom

Include playerfds.swc on your library list to resolve the LocalStore class.This may not resolve the problem if you are mixing versions as Alex notes.Tom

AJ,This thread is 4+ years old and that Tom doesn't work at Adobe any more.Sorry.

- Since what version of LCDS is this issue resolved?LCDS 3.0 and above.- Is their  a Jira issue for this?No, as we use an private bug tracking system for LCDS.- Is a patch available?No, sorry.  You would have to work through Adobe Technical support to get a hotfix for this, and I do not believe that...