HELP i keep getting this error

ok so this is my problem
ever since my computer system was re-installed i cant start up crossfire anymore
when the screen goes black and the loading screen is about to come up an error message comes up saying: "Error in InitRenderer (). Shutting down"
and then crossfire shuts down i have tried re-installing it many times but it never the same message keeps coming up.
Can anyone PLEASE help me with this
thnx

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