I have such trouble, after several retries and fails. i have suceeded to run neo gui. BUT the block sync goes forever... and my neo is not showing... and how to check if I have gas...
I have feeling to be investittor you should be scientits:)) it is so complicated
You can download NEO chain to speed up the process. See details in the reddit tutorial. Link below:
https://www.reddit.com/r/NEO/comments/6p7fk1/tutorial_how_to_speedup_neo_blockchain/