Well,

- your stack is truncated, is there more somewhere?
- can you say anything about how you got there?
- did you notice that lines was not nil by the time the stack was written:
         lines:     {a TextLine 1 to: 67 . a TextLine 68 to: 139 . a 
TextLine 140 to: 240 . ...etc...

Cheers,
Bob

On 9/16/13 5:26 PM, Nicolas Cellier wrote:
> Lately I have many instances of these yellow cross over red background 
> that happens when a low level morphic error is encountered.
>
> It seems related to a MultiNewParagraph lines being nil like in 
> following stack example.
>
> I don't know if it can help a morphic guru, but I just hate those 
> stateful behavior with volatile states...
>
> Really hard to debug/understand!!!

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