An installation problem

Recently I tried to install MS5.5 on my red hat linux machine and encountered this:

Starting installation...

Install log in /home/zxgao/Accelrys/MaterialsStudio55/install.log

Checking for dependencies for CASTEPServer:7

Checking for dependencies for CASTEP: None

Checking for dependencies for MatServer:34

Checking for dependencies for Licensing:1

Checking for dependencies for LicensePack: None

: No such file or directory

WARNING: You have either chosen to cancel your installation, or an error has occurred.

Please Verify your usage is correct:

Usage: lp_setup [-silent] [-console] [-is:tempdir ] [-is:log ] [-P licensepack.installLocation=]

       -silent - installs the product in silent mode.

       -console - installs the product in console mode.

       -is:tempdir - allows the user to specify the location of your tmp dir.

       -is:log - allows the user to create a verbose log of your installation.

       -P licensepack.installLocation - allows the user to specify the location to install LicensePack

If usage is correct please refer to FAQ section of the LicensePack documentation or contact Accelrys Scientific and Technical Support.

The LicensePack documentation index is called LicensePack.html and is located on the CD.

Return Code: 127

Failed to find folder %LP_LOCATION%.

Aborting Materials Studio installation.

I've searched online for the failure's reason. Someone says this is due to old version of JRE. However, I have also heard that old version MS, say 5.0, may not operate correctly with the latest version of JRE. So is the installation failure a problem of JRE, or something else? If it is really the problem of JRE, is there any way to install MS 5.5 while keep MS 5.0 on the same linux machine? Since I already have MS 5.0 on my computer, do I have to install license package again?

Thank you for your answer!