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
Had some issues, also with the chain.acc file, as well.
What was finally working was:
1. download NEO GUI (not open then GUI yet)
2. download chain file
3. copy chain file into GUI folder
4. open NEO GUI
5. wait until GUI is fully synced (blocks and height are same on show same as current explorer block)