New error with AC-RF2 on HS2 Pro

[Richel]

I just discovered a new error when trying to access env. sensors or sec. devices with the AC-RF2 web interface:
Server Error in '/' Application
Public member 'PublicGetEnvLastHeard' on type 'HSPI' not found.
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.MissingMemberException: Public member 'PublicGetEnvLastHeard' on type 'HSPI' not found.

Source Error:
Line 1966: ' Find out when it last transmitted
Line 1967: '
Line 1968: Dim strLastHeard As String = hspi.PublicGetEnvLastHeard(index + 1)
Line 1969:
Line 1970: %>
Source File: C:\Program Files\HomeSeer HS2\html\hspi_acrf2\hspi_ACRF2.aspx Line: 1968

Any help would be appreciated.

Thanks,
Elliott