You can't install the TP extension until the LDT SP1a to match acad.exe is
available. There were some changes to the core engine that haven't rolled to
LDT yet, and those changes are what make the TP extension work.
Sorry.
--
James Wedding, P.E.
IT Manager
Jones & Boyd, Inc.
Dallas, TX
XP/1 on P4-1.6/512
LDT2004+C3D