Hi Sagar,
As I see from published site some locales are missing.
Please make sure that installed package sitebuilder_module-login-4.5.0-build08090214 not corrupted.
Main locale file for frontend is /usr/local/sitebuilder/resources/locale/en_US/Modules/Login/Frontend.lng.
If it's corrupted please try to reinstall it. You can even customize it if you would like. Just in case pasting the content of the file:
[root@localhost ~]# cat /usr/local/sitebuilder/resources/locale/en_US/Modules/Login/Frontend.lng
address1 = "Address1"
address2 = "Address2"
cancel = "Cancel"
city = "City"
company = "Company"
contactInformation = "Contact information"
country = "Country"
email = "E-mail"
enterYourName = "Please enter your user name to receive your password."
firstName = "First name"
forgotYourPassword = "Forgot your password?"
goToLoginPage = "Go to registration page"
lastName = "Last name"
login = "Log in"
loginForm = "Log in"
logout = "Log out"
myProfile = "My profile"
password = "Password"
passwordConfirmation = "Password confirmation"
passwordNotSent = "Could not retrieve your login information. Please try again."
passwordRecovery = "Password recovery"
passwordRecoveryForm = "Password recovery"
passwordSent = "The password has been sent to your e-mail."
phoneNumber = "Phone"
profileForm = "My profile"
profileNotUpdated = "You profile data has not been updated."
profileUpdated = "You profile data has been updated."
provideLoginInformation = "Log in"
registerAndLogin = "Register & Log in"
registerNow = "Register Now"
registration = "Register"
registrationForm = "Register"
registrationInfo = "Registration and submitting your personal information will facilitate your use of our site."
rememberMyLogin = "Remember my login"
state = "State"
submit = "Submit"
updateProfile = "Update profile"
userName = "User name"
youAreDeactivated = "Your account is deactivated. Please contact the site administrator."
youAreLogged = "You have logged in."
youAreNotLoggedCheckLoginAndPassword = "You have not logged in. Please check your login and password."
youNotRegistered = "Your account has not been registered. Please try again."
youRegistered = "Your account has been registered."
zip = "ZIP"