[antlr-interest] Mismatched Tree Node and lack of StringTemplate output

[Cameron Palmer]

I created a rule to appear in my AST that involved an imaginary token:

dsBody
    : id COLON INT EOL
    iStructElements -> ^(ISTRUCT id INT iStructElements)
    ;

Where ISTRUCT is defined:

ISTRUCT :;

This throws a warning:
The following token definitions are unreachable: ISTRUCT.

Should I worry about this?

Second question...
I am getting This error:
SDFWalker.g: node from line 0:0 mismatched tree node: DOWN expecting VERSION

Thanks,

Cameron.
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