KeyNotFoundException when querying over object property that has no setter

[Dmytro]

Hello,

Here is the stack trace.
The issue can be reproduced if remove setter from the Book class in the LinqExteneder Test project.

System.Collections.Generic.KeyNotFoundException was unhandled by user code
HResult=-2146232969
Message=The given key was not present in the dictionary.
Source=mscorlib
StackTrace:
at System.Collections.Generic.Dictionary2.get_Item(TKey key) at LinqExtender.Query1.FillBucket(BucketImpl bucket, PropertyInfo info, Object value, MemberExpression memberExpression) in C:\Source\LinqExtender\Source\Query.cs:line 1038
at LinqExtender.Query1.ExtractDataFromExpression(BucketImpl bucket, Expression left, Expression right) in C:\Source\LinqExtender\Source\Query.cs:line 924 at LinqExtender.Query1.ProcessBinaryResult(Expression expression) in C:\Source\LinqExtender\Source\Query.cs:line 748
at LinqExtender.Query1.VisitBinary(BinaryExpression expression) in C:\Source\LinqExtender\Source\Query.cs:line 568 at LinqExtender.ExpressionVisitor.Visit(Expression expression) in C:\Source\LinqExtender\Source\ExpressionVisitor.cs:line 63 at LinqExtender.ExpressionVisitor.VisitLamda(LambdaExpression lambdaExpression) in C:\Source\LinqExtender\Source\ExpressionVisitor.cs:line 139 at LinqExtender.ExpressionVisitor.Visit(Expression expression) in C:\Source\LinqExtender\Source\ExpressionVisitor.cs:line 28 at LinqExtender.Query1.VisitMethodCall(MethodCallExpression expression) in C:\Source\LinqExtender\Source\Query.cs:line 662
at LinqExtender.ExpressionVisitor.Visit(Expression expression) in C:\Source\LinqExtender\Source\ExpressionVisitor.cs:line 65
at LinqExtender.Query1.CreateQuery[TS](Expression expression) in C:\Source\LinqExtender\Source\Query.cs:line 154 at LinqExtender.Queryable.CreateQuery[TSource,TResult,TDelegate](IQueryContext1 source, MethodInfo methodInfo, Expression1 expression, Type[] genArgs) in C:\Source\LinqExtender\Source\Queryable.cs:line 70 at LinqExtender.Queryable.Where[TSource](IQueryContext1 source, Expression`1 predicate) in C:\Source\LinqExtender\Source\Queryable.cs:line 18
at LinqExtender.TFS.Tests.WorkItemContextTest.SimpleWhereExpression() in

[Dmytro]

I understood why it happened and looks like it is as designed. The behavior can be changed only after applying a dynamic proxy instead of class generator (that's mean switching to .net4) and rewritung a bit of logic inside the LinqExtender assembly.
I forked a code and will try to play this it.