Before installing a new version, FIRST delete ALL old version files. This includes ALL old TMS *.DCU, *.OBJ, *.HPP, *.BPL, *.DCP, *.BPI, *.LIB files. Look for files in your FULL Delphi or C++Builder library path as well as Windows\System and Windows\System32 directories. Check also that the correct Delphi or C++Builder update packs required by your IntraWeb version. Information about required update packs can be found at the website of AtoZed.