I don't think it's one of the errors that appears too often. My suggestion is to 1st: Update your installshield engines:
Installshield updaters
2nd: install Java
Java 1.4.x OR
Java 1.5 (take the JRE)
3rd: re-dwnld the LW installer (english version) & try re-installing.
4th: if these steps fail. Dwnld & install the International version. It's a larger dwnld but uses a different type of installer. The english one is prefered b/c you can easily change the version of java it uses.