Counter Strike 'Protocol 47/48' Error

Valve just update there Counter Strike Engine to Protocol 48 from 47. New Demos of Counter Comes on Protocol 48 Base Engine. the Old Protocol (P47) Cant play the new Demos :( .

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anybody facing this problem ? any1 knows how to solve it ?

i tried a lot (googling too) but still cant find any solution for this .

not a single person know abt it ? :/