Adress Error on real hardware (MD1, PAL, 60hz)

[Pat86]

Just tested the demo on my Megadrive I (PAL, 60hz) and got this error

[gligli]

Did you get it immediately or on a particular screen?
Also, does it happen all the time?

[Pat86]

To be honest, i dont know exactly when it happend as my phone rang and i tuned out for a moment. It must have been around the skull part. Unfortunately i couldn't repeat the error. Ran the demo afterwards again in 50hz and 60hz but this times it ran without any flaws.

btw. the music kept on playing on the error screen above.