RPT30055 Unknown arrowheadStyle: {0}.

Explanation

A value other than NONE, TRIANGLE, CIRCLE, DIAMOND, or SWEPTPOINTER was encountered in the MarkerShape property of an arrow object.

User response

Ensure that any action that sets the value of the MarkerShape property of an arrow object sets it as NONE, TRIANGLE, CIRCLE, DIAMOND, or SWEPTPOINTER.