http://developers.de/blogs/damir_dobric/archive/2007/08/09/biztalk-rfid-rc-version-number.aspxIf you have built your own the DSPI (Device Service Provider Interface), you may find that the provider cannot be registered by using of BizTalk RFID Release Candidate version. The error popped-up describes that the assembly implementing the providerenCommunityServer 2008 SP1 (Build: 30619.63)