adzap-AR_Mailer sending email error

I am getting the following error when I try to send an email using the ar_mailer:

Unhandled exception wrong number of arguments (7 for 6) (ArgumentError):

I found an article that stated the following

"My problem is the number of arguments passed for mail account configuration in environment.rb does not match the number of arguments that ar_sendmail required (6 for 7 as you see in the error message).

The solution is: make them match either by providing the all required arguments or delete those unavailable arguments (for you) in the ar_sendmail function."

I am new to RoR and need a little help with what I should do to fix this problem.

Thank you,

Sean McGIlvray

I guess you have installed Ruby 1.8.7 if so, install 1.8.6 and try it again

Regards

Borja Martín: If I am on a shared hosting how do I use 1.8.6 instead of 1.8.7?

Sean