Maybe one TIP that a lot of people knows but always useful to debug installation problems.
Debugging a Win32 installer
To view or capture the debug output from a Win32 installer, hold down the <CTRL> key immediately after launching the installer and until a console window appears. Before exiting the installer, copy the console output to a text file for later review.
Debugging a Unix/Linux installer
To capture the debug output from the Unix command line developers need to perform the following: enter one of the following (based on which shell) at the command line prior to executing the installer:
export LAX_DEBUG=true or setenv LAX_DEBUG true or LAX_DEBUG=true or set LAX_DEBUG or whatever would be appropriate for the Unix shell.
Then run the installer. The output that is produced should help debug the installer.