Extensible storage on ProjectInfo (Revit 2012)

[FRFR1426]

I'm using Extensible storage to store project wide data on the ProjectInfo element. All is OK on Revit 2013, but on Revit 2012, when I save the project and try to reopen it, I've got a message saying that element 558 (ProjectInfo) is corrupted and then Revit crash.

The code is like this:

using (var entity = new Entity(Schema))
using (var tr = new Transaction(document))
{
    if (tr.Start("Save settings") == TransactionStatus.Started)
    {
        entity.Set(...,...);
        Document.ProjectInformation.SetEntity(entity);
        tr.Commit();
    }
}

 Schema is a property where the Schema is build.

[FRFR1426]

When I close, I've sometimes a runtime error: R6025 - pure virtual function call

[FRFR1426 · Accepted solution]

Just installed SP1 & SP2. Seems to resolve the issue.