Very strange, it works in both delphi 6 and 7 when i'm installing it. Don't really know what's wrong, but you can allways install in the old fashion way by opening the dpk file, pressing install and then add the directory GLXTreem\source to the libary paths. Btw, witch os are u using ? I'm oly tested the installation program using WindowsXP, can have someting to do with that =(

Really sorry about the troubles.