Profit Markup Calculator for 1.38?

Hey everyone... I'm seeing a profit/markup calculator available as a free add-on but it only goes up to ver 1.37. Does that mean it is not yet tested on 1.38 ? I may be blind but I really looked around for an answer... thanx

In a lot of cases, mods developed for 1.3.7 should be OK on 1.3.8.

In the case of a module OVER-WRITING core files, always backup the original files before sending the mod files over FTP.

If a module makes additions to the database, always backup the database before running scripts that alter the database.

If you perform these two safety features, then you can install the module and test it. If it works, well and good.

An alternative (preferable) is to have a "Test" installation of zencart. I usually put this into a sub-folder of the main site (and which I then password-protect with a htaccess).

I test everything on this test install and really drive it hard. If it functions ok, then I put it into the main site.