Joe_H wrote:Most people have no problem with the client downloading the GPUs.txt file on its first startup.  Where it has been a problem is mostly on Linux installs or installs where the GPU and its drivers are not fully installed.  If the GPU is not detected at all, the installer sets that GPU folding is not to be set up at all.
Hmm, I suspect that between AMD GPU driver installation issues on a *nix platform and the sheer quirkiness of getting the GPUs.txt file it now makes sense why there were crucial stumbling blocks for a novice *nix user like me.
However once I switched over to an nVidia GPU and installed the official (closed source..) driver the issue with GPUs.txt still got in the way. Thankfully at that point it wasn't a compounded issue and being reminded of the GPUs file was enough of a prompt to get me started on the final step. 
Joe_H wrote:As also mentioned, if the network is not up, the file also might not get downloaded.
 It seems like there needs to be a sanity check built in, IE the client looks for the file and either fetches it or warns the user that it is missing. Oh well, thank you Joe for explaining this, it was pretty vexing when stupid me was dealing with it. :[
Thanks Bruce as well.