QueryOver AliasToBean trying to set property on System.RuntimeType

[Mike Gibson]

I have a query that is giving my this error:

NHibernate.PropertyNotFoundException: Could not find a setter for property 'CompanyId' in class 'System.RuntimeType'

I have not been able to find anything that points to where this would come from. Most references to this online are about misspelled string names of properties but I am using lambda expressions for everything.

The query is below, note that DailyTransaction is polymorphic and subclasses can map to other tables or the DailyTransaction table. 

private IFutureEnumerable<AccountBalanceSummaryRecord> AccountBalanceSummary(Product product, ProductCycle productCycle)

{

DailyTransaction transaction = null;

TransactionType transactionType = null;

DailyTransactionProductValue productValue = null;

AccountGroup accountGroup = null;

Account account = null;

AccountBalanceSummaryRecord record = null;

return Session.QueryOver<DailyTransaction>(() => transaction)

.JoinEntityAlias(() => productValue, () => transaction.Id == productValue.DailyTransaction.Id)

.JoinAlias(() => transaction.TransactionType, () => transactionType)

.JoinAlias(() => transaction.DebitAccountGroup, () => accountGroup)

.JoinAlias(() => transaction.DebitAccount, () => account)

.Where(t => t.Product.Id == product.Id)

.And(t => t.Day == productCycle.Day)

.And(t => transactionType.Code != TransactionType.A)

.And(t => transactionType.Code != TransactionType.B)

.And(t => productValue.ScheduledCycle.Id == productCycle.Cycle.Id)

.And(t => accountGroup.BusinessRight == BusinessRight.A)

.And(t => accountGroup.IsBalanced)

.And(t => account.AccountType == AccountType.TT)

.SelectList(l => l

.SelectGroup(() => transaction.Company.Id).WithAlias(() => record.CompanyId)

.SelectGroup(() => transaction.DebitAccountGroup.Id).WithAlias(() => record.AccountGroupId)

.SelectGroup(() => transaction.DebitLocation.Id).WithAlias(() => record.LocationId)

.SelectGroup(() => account.AccountType).WithAlias(() => record.AccountType)

.SelectSum(() => productValue.ScheduledValue).WithAlias(() => record.DebitScheduledValue)

.SelectSum(() => transaction.DebitValue).WithAlias(() => record.DebitValue)

)

.TransformUsing(Transformers.AliasToBean<AccountBalanceSummaryRecord>())

.Future<AccountBalanceSummaryRecord>();

} 

I am also having an issue where 13 left joins from those polymophic tables are being added to the query.