Type initializer for CrystalReports.Engine.CRPE

Question

Hello friends,

Now i m facing very big problem i have installed my windows application software on client side even i have installed crystal report . but when i m opening any report its show me this Error

Type initializer for CrystalReports.Engine.CRPE

what is this and what should i do for it...
please help me its urgent.. please give me solution

thanks in advance