ICE47 posts an error message if a feature exceeds the maximum limit of 1600 components per feature.
ICE47 would report the following warning:
Feature 'Feature1' has 1600 components. This could cause problems on Win9X systems. You should try to have less than 800 components per feature."
Feature Table (partial)
FeatureComponents Table (partial)
To fix this warning, try splitting the feature into several features