I tried it. I run Decal 2.9.6.0 on my desktop PC (I'm on my laptop atm, so I can't give you an export). I dl'd it, ran the 'install' and it gave me a .dll file. Since that was the only file, I went into Decal config and did the 'add', 'browse' routine on the .dll. I didn't get any errors, but plugin manager doesn't show up anywhere. I reboot, tried again, same thing. I don't know what was supposed to happen, so I stopped messing with it. (I didn't know if plugin manager would run when I started Decal, or maybe there's an .exe file missing for me to run plugin manager).
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Arggash - level 275 Tank/3 School/Bow
ShoJimbo - retired axer Apr 2002
ViaJimbo - level 230 2H Meat Shield
Babu Bhatt - level 208 War Mage
Keith Stone - level 117 Axer