You can get your contract abi after verify from etherscan by passing your contract address,contract name,compilter version,your contracts complete source code and bytcode but i already tried and got some error. i got my abi from contract json file into build directory.

i figured out this issue by passing gas 4000000 and before deploy your contract please get some ether balance in your owner account using metamask ropsten test faucet, after that you will be to deploy contract without any error.

Hello Martin Blanco, can you please explain in details how to call contract methods in ropsten test network. I have successfully done the PreICO but now i am stuck in start the ICO.