Unable to start MAME in recent build

Hi all, i entered the magic code and all was revealed wit the games menu Smile

Now i try to run a MAME zip file and there is a small flurry of activity, but it seems to fail.
https://pastebin.com/vRvjzM9V

I have MAME 2000 emulator installed, and a known working ROM.. but there are lots of errors in the logs.

Any ideas?

Nathan