O/S redhat 7.0
it's a tar packages.
i had use the command tar vxf ./InterBaseSS_LI-V6.0.tar
then two new files was created.
InterBaseSS_LI-V6.0.tgz,install
so I run the ./install but it give me this error.

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ERROR: Syntax error, expected archive file.
Usage: ./install [-c | -s] AbsolutePathOfTheTarFile

*** Install completed with errors ***
Install log can be found at /tmp/ibinstall.log

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so how should i go about to install it?