I don't know why but today was the day it sometimes worked. Not alle the time but sometimes. In the script I can see that I try to do multiple clicks on the object. It is always the same syntax, but other coordinates.
At the beginning TestComplete can not find the object then it can be found. After this I want to click a button on a new form. Now the button is not found even if the button is there. I can see him and the object spy can find him to. I compared the names an they aret the same.
Anoter object I TC can not find is a toolbar. If I try to click on it an error occures, butt if I record to press F10 then the first element of the toolbar is choosen. And I can go through the items with left right up and down. So this should be clear proof that the object which "dose not exists" exists.