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Attempting to display flow arrows on a geometric network in ArcMap returns:
One or more layers failed to draw:
General function failure [EdgeFeatureClassName]
Syntax error (comma) in query expression 'SHAPE_Length >= 123,56789'
This problem only occurs when the decimal symbol in the Regional Settings is not a '.', which is common on most European computers. When the decimal symbol is not a '.', then the query expression fails with a syntax error.
This problem is addressed in ArcGIS 8.1 Service Pack 1. See the Related Information section to download this pack.