Thanks for getting in touch, El.
Yes, I have tried the error reporting by don't get anything more detailed than the standard '500' message. In my CPanel, there is nothing in the error log at all.
I contacted my host and they said that they ran a 'permission fix', but that has no resolved anything either.
I also tried to download the module that you suggested, but when I click the download link, a window pops up that say 'invalid key' and I can't go any further.
Not having much luck