Be sure and get the correct version of LP 1.03. There were 2 of them but with different date codes 2005.09.21 is the correct LP. There is a process to installing the mess so that could be the problem also. The 2 LP files need to be unzipped to a single folder on your desktop. Then you can run the setup.exe file from that folder and install the LP. We are running OSM 3.75b. The new stuff is using the IT tool