Splunk on local machine fails to install apps from file

I'm trying to install [Splunk Security Essentials for Fraud Detection](https://splunkbase.splunk.com/app/3693/ "SSE for Fraud Detection") on my local machine that I use for practicing with Splunk, and I can't find the app in the Browse More Apps section, so I downloaded the .tgz file, unzipped it to get the .tar file, and tried it both ways. In the past, app installs would throw an error, but the app would still be installed. This time I'm getting either ERR_CONNECTION_RESET or ERR_CONNECTION_ABORTED depending on if I use the .TGZ or .TAR respectively. Is there an easier way to do this, or some other app I need to install prior to the SSE for Fraud Detection app? I already have SSE installed. Thanks!