[PyQt] memory can't be "read"

[Mario Daniel Carugno]

Hello, i was trying to run a pyqt application on windows. It works,
but when i close it, the following error appears:

  The instruction at "0x018f9098" references memory at "0x00a8c448".
The memory can't be "read"

The message could be not exact in english since i'm translating it from spanish.
I've seen this error before, i think it's a common issue on windows.
Do anybody know how to solve it ?
Thanks