Invalid Association

Hi,

 I had the following entities in my project.

Site

[ValidateLength(0, 100)]
private string _address;
[ValidateLength(0, 50)]
private string _city;
[ValidateLength(0, 2)]
[Column("CountryCode")]
private string _countryCodeId;
[ValidatePresence]
[ValidateLength(0, 50)]
private string _siteName;

[EagerLoad]
[ReverseAssociation("Sites")]
private readonly EntityHolder<Country> _countryCode = new EntityHolder<Country>();

Country

[ValidateLength(0, 20)]
private string _continent;
[ValidatePresence]
[ValidateLength(0, 50)]
private string _countryName;

[ReverseAssociation("CountryCode")]
private readonly EntityCollection<Site> _sites = new EntityCollection<Site>();

In database, the relationships of tables are these:

Check Existing Data On Creation Or Re-enabling - No
Enforce Foreign Key Constraint - No

Here's the scenario, If I try set a "null" value to CountryCodeId property in Site object it throws an error, "Country Code is required" where in CountryCode was set to allow null in schema.

Any idea?

This is an error in our handling of foreign keys of type string.  I've committed a fix and it will be included in the 17 July nightly, available from about 1430 GMT.  Please let us know if you still see problems, or run into any knock-on effects.

 Hi Ivan,

 I've got this error when I retrieve a record, "The given key was not present in the dictionary". I'm using the 17 July nightly build. Actually even my other code the retrieve a record throw this error.

Could you provide us with a small console application project and SQL scripts for the tables and sample data so we can reproduce this problem?  Thanks!