Bisey wrote:

>Hi,
>
>Actually I got this error under Delphi 6. But I couldn't find any
>solution. I assume I can find somebody here to help me. ... I got
>this error when I browse or scroll in this table.
>
>
>

Just some shots in the dark:

1. Since exeption class is EIB... I supose you are using IBX.
Is it "pure" IBX or there is some kind of "wraper" over it?
2. Which are the event handlers attached to that dataset?
3. Are you using any calculated fields?
4. Are you aware a calculated field can only be assigned inside
a OnCalcFields event handler?
5. What is the value for State property on that dataset when
the error fires?

Ivan.