Error 40: a connection with SQL connection could not be opened

[Mariajo]

Hello, i have a report made with reporting Q3 2013 and VS 2012. When installing it on the client, it gives error 40: a connection with SQL could not be opened. The report in local is ok. that could be happening? other report in the same app are ok, with de same connection.

I'm using SqldAtaSource with connection defined in web.config.

Thank you