BCrypt library seems not to work for different computer

Let's say I have exactly the same project file.
I generate a hash password, using
string hashedpwd=BCrypt.Net.Bcrypt.HashPassword(password);
//store hashedpwd in DB
bool BVerify=BCrypt.Net.BCrypt.Verify(password, dbPwd);
BVerify returns true 
Then, I go to another computer, import that ms sql database into another computer, and run the project in VS 2012,
BVerify returns false,
Would like to know why is this happening?