Stack overflow

[Ikaruspilot]

Sometimes when I bring up an  FSX plan, created in Plan-G 2.0.5.493, I get the following error message:
"Stack overflow at line 15".

The plan seems to be unaffected by this error.  Should I be concerned about it?  And how can I prevent it happening?

[tim arnot]

Please attach the flight plan, and I can take a look at it.