Hi Frans

I ran into this problem when implementing filtering support into my lambda-based prefetch syntax.

This query against northwind:

LinqMetaData meta = new LinqMetaData(adapter);
    var query = from c in meta.Customer select c;
    query = query.WithPath(new PathEdge<OrderEntity>(CustomerEntity.PrefetchPathOrder, o => o.ShipName.EndsWith("hevalier")));

Produces this error in QueryExpressionBuilder.HandlePathEdgeExpression:

System.InvalidCastException: Unable to cast object of type 'System.Linq.Expressions.MethodCallExpression' to type 'SD.LLBLGen.Pro.LinqSupportClasses.ExpressionClasses.FilterExpression'.

Ok, sounds like a missing coerce to filter call somewhere, will check it out

Error is caused by the fact that the lambda isn't handled in the preprocessor. (the pathedge's elements aren't handled till the last phase). Will correct that.

Ok fixed it. I'll attach a new build for you so you can check if your Withpath code still works.