Recently reinstalled Oblivion and got it working on Windows 7, and installed the Blackwood Company mod. However, with it active, whenever I try to speak to people the game crashes. Anybody got any idea what's going on and how I can fix it? I'd really like to play it through.

You're definitely going to have to be more detailed than that if you want help. Post your load order at least.

Sorry, here's my load order:

C&C The Blackwood Company.esp
Cobl Glue.esp
Cobl Main.esm
Dark Dungeons.esp
Darkgreen Glass Armour.esp
DLCBattlehornCastle.esp
DLCFrostcrag.esp
DLCHorseArmor.esp
DLCMehrunesRazor.esp
DLCOrrery.esp
DLCSpelltomes.esp
DLCThievesDen.esp
DLCVileLair.esp
fadingtorches v 1.3b.esp
HrmnsOblivionsScriptOptimization1.0.esp
LYRPadfootClothes.esp
Oblivion.esm
RhymeReason.esp
TravelersCloaks.esp
_darker_dungeons.esp
_darker_nights.esp

Anything else I can give to help?

You can delete HrmnsOblivionsScriptOptimization1.0.esp it's buggy and doesn't even help. Do you use a mod managing program or did you just write down you load order? I assume you wrote it down because it's impossible for Oblivion.esm to load that late. Anyway just use BOSS and that should sort things out for you. http://www.tesnexus.com/downloads/file.php?id=20516

You should also trade in _darker_dungeons.esp and _darker_nights.esp for http://www.tesnexus.com/downloads/file.php?id=22819, not that there's anything wrong with those but LTBD is better.

You might also wanna get some unofficial patches http://www.tesnexus.com/downloads/file.php?id=5296