Crystal Report not Opening

i have used vb2005 & crystal report and i have delopd the software using all the dependencies & crystal merge modul

then also when i instal the setup in another pc then there i get a error of

Error:
c:/program files /common files /Business object / 2.7 /bin/ sacommlayer.dll cannot be register

and 2 more dll cannot be register bcoz of that i cannot open reports in my project bcoz it give error of

Error:
c:/program files /common files /Business object / 2.7 /bin/ sacommlayer.dll is not a valid windows images. Please check this against your installation diskette

can any one help me out :)