>Yes, but I cannot change objects name. I use it in different places in my application.
You might try to change it in one place anyway, to see if my suspicion is currect. Mainly, it would be great to find out what is going on.
>
>I found a strange solution for this strange problem. I preview report in a window. If I release window after preview this problem occurs. Than I won't release that window (Windows's name different from my object).
Strange, indeed.
Difference in opinions hath cost many millions of lives: for instance, whether flesh be bread, or bread be flesh; whether whistling be a vice or a virtue; whether it be better to kiss a post, or throw it into the fire... (from Gulliver's Travels)