Reader XI "save" button creates "save as"-dialog in a dynamic PDF

[Squaredbrain]

I made a dynamic PDF with LCD ES4. Sometimes it occurs that a "save as"-dialog appears though I pushed the "save"-button. I am using Reader XI 11.0.07 on a Windows 7 Pro system. Suggestions?

[radzmar]

This don't seems to be a problem of the form.

It's more likely that Readers save operation fails because the file is used by another process (Exploerers preview pane for example) or there are no rights to save into the current directory.