Error message regarding EC_EXTEND

Error message regarding EC_EXTEND

Error message pointing to a line in EC_EXTEND with <! at the start.  Why does it occur?

Newer versions of Motion Perfect require the correct syntax for XML comments.
For example:
      <!-- CoE CW (2), Target Pos (4), Touch probe (2), Digital outputs (4) -->
Older Motion perfect versions allowed the old format that is actually wrong.
Like this:
      <! CoE CW (2), Target Pos (4), Touch probe (2), Digital outputs (4) >

One simply needs to add the -- after <! and before >.

You can also see the reason in this tutorial: