I finally received this answer from SONY:
Hi emilio,
Thank you for contacting Sony Creative Software.
To reset all preferences, settings and window placement back to their original state, close the program. Then hold down the Ctrl & Shift keys when you start it again. When the program starts to load, you will see a window that asks: Do you want to reset all preferences to default values? To fully reset all defaults, make sure that ‘Delete all cached application data’ is checked. Then choose Yes.
If you still have a follow-up question on this particular incident, please feel free to update it. If you have a completely different question, please create a new incident.
Sincerely,
Eric D.
Customer Service & Technical Support
Sony Creative Software Inc
http://www.sonycreativesoftware.com
And now 2D GLOW works fine !
And thanks Joe for your help !