Hello Jason,

I found the cause.

Table1.Open;
Table1.Append;
Table1Field.value := 'Hello';
Table1.Post;
Table1.Close;

DataBase.RollbackRetaing;

Puts the system in an unknown condition

However

Table1.Open;
Table1.Append;
Table1Field.value := 'Hello';
Table1.Post;

DataBase.RollbackRetaing;
Table1.Close;

Works fine :)

Looks like: do not close any tables updated before a RollbackRetaining.

Best Regards
Hans