Version 1.3.9b (NOT upgrading yet because I don't have the money to pay someone and I broke my store upgrading it from 1.38a to the 1.3.9 series)
Yes, I have mods installed but since I found a post just like mine with a solution I'm not listing them.
The solution ONLY works if YOU aren't your own hosting provider.
I'm on a dedicated server. So I am my own host. That solution will not work as posted. I need to know the exact steps.Here's what ended up solving the problem for me (so maybe it can for you too).
I contacted my hosting service and explained to them the error that I was getting. Before the end of the day I got the following response:
"It appears that your domain may be hitting some of our recently updated mod_security rules. We can whitelist these, but first we will need to be able to reproduce the error."
And that ended up taking care of it. So if you're reading this thread, you may want to check with your hosting service first. (Mine is awesome, by the way. I wish I'd thought to contact them in the first place - could have saved myself some grief).
Btw, I am an adult, I did NOT need the idiotic reminder flashing to rename my admin folder. The person who upgraded it renamed it for me before I had a chance to stop him but in our case it was entirely unnecessary.
Renaming the folder has caused NO end of grief apparently as evidence in these threads.
Liz




