You will probably need to be a bit more specific as to WHAT doesn't work.
I will go over what I suspect is the most likely possibility, Decal failed to update thru the 'Update' button in the Decal Agent 3.0.
Close Decal and AC and then open the folder you Installed Decal into, often C:/program files/decal 3.0/ Inside your Decal install directory there are *2* icons that look alike, one is Denagent.exe and the other is DecalUtil.exe. while Decal agent is NOT running, use DecalUtil.exe and after that opens hit the auto update button.
If this is your issue the above should take care of it.
If this is NOT your problem, start a new post with a full Decal Export for the Experts to look at.
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