Ruby ODBC error

I am getting the following error when trying to connect to sql server
via odbc from a customer’s computer

OLE error code:800A0E7A in ADODB.Connection
Provider cannot be found. It may not be properly installed.
HRESULT error code:0x80020009
Exception occurred.

Here’s a piece of the script

require ‘odbc’
require ‘win32ole’

db =“ADODB.Connection”)“Provider=SQLNCLI;Data Source=#{@server_name};Database=#

The script works from my computer. I have installed MDAC on the
customer’s computer,

Any help would be greatly appreciated.