to uncompress your archive, and states that after issuing the command,tar -zxf cmsmadesimple-1.2.3.tar.gz
.Now you have new directory named something like cmsmadesimple-1.2.3
This used to be true, but now, the structure of the archive has changed and it extracts IN THE CURRENT FOLDER.
I followed the instructions in the root of my site, believing it would create a test version with release 1.4.1 in a sub folder, instead I got my old version 1.2.x overwritten and my site down.
I should have followed the old advice: Don't fix what's not broken.