MAMEUI64 0.272.0 has been released.
Available at https://messui.1emulation.com
The only major change is the ability to get proper crash dumps in case something goes wrong. Most people can ignore this, but if you think you can help with tracking down problems you must start MAMEUI with a redirection parameter. For example:
>mameui > crash.txt
Various internal things will be written to crash.txt which can be ignored, but should a crash occur, the dump will go into crash.txt as well. The dump uses the new file mameui.sym which has been included in the download package. When a crash occurs, MAMEUI will appear to freeze for about 60 seconds, before exiting. No need to panic. If the freeze goes on for too long then you can terminate the process.