At the top of the info page for this package it says:

Important: For Umbraco 7 please install version 2.x. For Umbraco 6 please install version 1.3.1

And then there is a handy-dandy button to download the package (version 2.4.1).

But then at the bottom of the page where the other package files are listed, in a small light-gray font it says to use package version 1.3.1 for Umbraco 7.2.x and 7.1.x.

I didn't see that before I installed version 2.4.1 on Umbraco 7.2.1 and due to an error, the whole site crashed.

Please make this clearer as 2.x does not work for all installations of Umbraco 7

https://our.umbraco.com/packages/developer-tools/diplo-trace-log-viewer/