Originally posted by mahers
Could you try calling the functions from functions.php to check that including the file is not causing the error?
If what I understand you saying is correct, the answer is: it depends on which function. A function that just produces a little HTML is one thing, but one that performs a db query with preset input would have required setting up another front end, or turning rg on and creating an obscene looking URL.
It was, as I mentioned, a rather dumb error in the end, but one that produced unusual results due to its nature. Generally, PHP is so wonderful with its error messages that you expect to see a cause when something's not working (at least I find that to be the case most often.) Why it couldn't include some functions, but could others, seemed like it had to be a syntax error issue, but PHP didn't explicitly say so, and I had a rather large chunk of code to read.
I hadn't thought much about the old / .... / trick; that, and a bit of luck, got me onto the problem rather quickly. It'd been rolling around in my head for over a week, though.
Thanks anyhow!!