I believe mine isn't working because I don't have the 1.2.7 patch installed. However, when I try and install that, it claims that my installed region code is incorrect for it. Mine is from North America, does anyone have a patch that actually works with it? Either that or I need a patch with that restriction removed; the patch installer itself might be buggy.
What patch are you trying to install? Are you talking Windows or OS X? Have you read the Patch thread (there are links to all versions in there)?
Windows here, and no, I haven't read that thread yet, I'll try to find it, but just in case, it'd be nice if someone could link me later- the search engine refuses to acknowledge the dots in 2.1.7, and instead searches for the numbers individually.
Edit: No problem now, just had to temporarily remove the no-censor patch and reapply my backup ((I NEVER just replace a file with its replacement, I usually label it as an original in some manner.)) Patched just fine.