What's the problem with "could not allocate vin for collateral address"?
I get it when I try to start a masternode, 250k were send to wallet 0, 15 confirmation passed already, all set in conf.
Got the same few weeks ago with another's coin wallet but don't remember how I had solved the problem.
open the debug console, type "masternode genkey" and copy that output to ur conf, instead of the graphical masternodeprivkey
Have tried it first, before trying graphical menu, and got could not connect...