For some reason, when POKE()ing an invalid address, my program quits with the following error message:

triangle square dot lines square triangle triangle lines

Those symbols are printed just like any other fatal error. It doesn't cause any problems, but I think a normal error message would be more helpful.

Heh, that was a mistake but it almost makes sense.

ok, I changed the message to "bad memory access" for 0.1.2

Yay!

On the subject of weird error codes, I was just told that I had an unclosed brace at line 0.00219.
(It was secretly line 141! le gasp)

It seems to happen when I omit a comma from a table that spans multiple lines, for instance:

T={1
2}

P.S.: Is it okay to report similar errors like this, or should I just make a new thread?

P.P.S.: I'd just like you to know that the music for "Hello World" is awesome. I was literally astonished when I heard it.

P^3.S.: I just remembered another error: Sometimes the octave in the music editor is set to 0, so using the lower octave results in octave -1, leading to weird things or crashing.