Intall Cs-Cart4.3.4, But Not Continue After It Says Janrain Add-On Installed

I'm new to the system. Installing cs-cart 4.3.4 downloaded recently.

Everything runs fine, it's installing.

But when the progress bar shows "janrain add-on installed", it never goes on. Wondering what's going on

In the installlog, the last line shows "Installing additional language en"