"I can not open the program docimento and jams frequently" - it probably related to some problem of not able to open Pinta document and to some problem of freezing/crashing Pinta.
The first thing that comes to my mind is of having non-English folder names problems in Pinta (so not able to open an image/document) and crashing/freezing was "feature" of previous version.
Do the following:
1. In Pinta program select Help | About menu and check for the version.
2. See Pinta download page: http://www.pinta-project.com/releases and install the latest version.
3. Try to reproduce the problem and if it appears post step-by-step instructions.
This is not a security bug, and I can't do anything without further information (preferably in English) about what the bug is.