I'm still curious however-- if you have any insight into how to a) edit files from an ssh gui or b) access putty with my pi login, I would be very interested. I can only seem to do these things via the root login and would like to not have to run into these kinds of issues again.
If you use Putty, you can edit the files via nano. Most of the configuration files are also available via file shares (under \\retropie\configs), so you can use a decent text editor from your PC (Notepad++/TextEdit) to edit the files. None of them require the usage of the root account for editing.
I would like to add I dont feel retropie cashes in on this they could make a lot of money if they chose to but they dont you get the moral decent project vote no one could dispute that. You project clearly runs itself for it purpose and not for profit.
Could under-rated wires inside the case be contributing to the low power as well?
I don't know, can you connect the power supply without those cables and test it like this?
On a side note. do you know of a good place to get a 3.5mm to RCA Composite AV Cable that works with the RP3?
Alas, I don't know that either, because I didn't need such a cable in my household, yet. The value of such tips also depend very much on where you live. I live in Germany; since it's 9 a.m. here and you posted about 5 hours before me, I doubt that you do, too. ;)
I rebuilt my image using the Attract Mode build and updated everything following Floob's advice. I redid it last night from scratch - and editing the config.tx and cmdline.txt files were successful. I presume I must have missed something or other that caused an issue with the folders. I still need to try Cyberduck, but am now optimistic about being able to SSH.
Hopefully it was just an issue with my install. Thank you for all of the help. Will keep you posted.
@robin76 How about starting with https://retropie.org.uk/forum/topic/3/read-this-first ? Please give the answers for the questions on that page, especially the RP version and what emulator are you using to run the ROM.
Files in the ROM folders should never be owned by root, how did you transfer your ROMs ?
@mitu that was quick, the directory flashes up so quickly, but I’ll try to record the screen to catch it.
Or try to catch it using the Pause key of your keyboard.
I don’t know how to repair permissions via terminal, will have to look that up.
It depends whether the owner is wrong or the actual access permissions. To change the owner, look up chown, to change the permissions, look up chmod. Or give us the output of this command after you found out the directory and we may tell you the necessary command(s).