Albert,
reportbehavior 90 simply renders all pages first and displays out of the "cached" result.
reportbehavior 80 renders each page in the moment you preview (and rerenders if you go back to a page)

both ways fail on the same problem - error on the last page.

Schönen Tag noch
Agnes

>Hello Sergey!
>
>With reportbehavior 90 the error comes immediately.
>With reportbehavier 80 the report starts, the first page is shown in preview and if you skip to the last pages the error pops up???
>
>Best regards
>Albert