could not allocate matrix (method setall called on invalid object)

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Hi all.
The problem is: i'm getting two messages every time i connect jit.window object to my complex jit.matrix.
I do not really understand where is the problem and how to solve it.

Patch is with some elements from Jitter tutorial 16.

Patch that i made consists of 6 jit.qt.movie. After jit.qt.movie i have 6 jit.matrix from which my complex jit.matrix is capturing 6 pictures.
In jit.pwindow everything is ok, but when i'm connecting, a jit.window this message appears in max window.

If it is useful i can post a code of my patch here.