As the referred link above, the error looks like indicates that some particular code index is out of bounds. I think it is expected since you modified the code into your own fork, the problem is I did not understand the codebase well enough but judging by the time of the error, maybe it has something to do with the wallet codebase. Something must be modified in your end but the other related configurations haven't been updated.
Well, seems it would do nothing since OP is the sole developer.
Right. so put in your issue here with all the code and error etc... 
https://github.com/Zetalon0/Napocoin/issues
https://github.com/Zetalon0/Napocoin/issues
Well, seems it would do nothing since OP is the sole developer.
I agree, i am looking at qt and gui code atm, as the daemon works fine, only qt wallet give out the error
