Me too have the same problem.
Grab the raw transaction from Armory and broadcast it directly with core for a better error message.
Yehw, but this I cannot understand at all. Allready peeked in the Armory Appdata and other nearby subdirectories.
Probably the wrong places.
I have troubles understanding "RAW Data", let alone finding them. Can't understand the concept of it.
That's how Newby someone can be.
I am sorry, but I really need some more help, already put some bitcoins in this Armory Wallet, wich seems have to stay there forever.
Oh man , I really feel miserable by such a misstake.