I am trying to downgrade the crystal report XI to cr v9. I tried to install the v9 without uninstall the v11. I got an error as ''Install cannot proceed because crysal reports 9.9.2.0.4395 has been detected''.
I am deploying the downgrade on production server therefore i can't uninstall v11 as v9 won't give trouble during installation.
Can you help me out please. Thanks