Guild Wars 2

I’m having a constant client crash, approximately every 20 mins.
Might be having compatibility issue with my graphic card.
I’m using GTS 450. Please refer to the attachment for the crash message.

Kindly look upon to this matter. (Urgent)

Just finished 100% (all hearts, PoIs, skill challenges, vistas for world, cities and all WvWvW maps). Last point was a vista in WvWvW. I do not have all of the smaller explorer achievements like Krytan explorer (as I understand they are not required).

What worked:

•Got title “Been there, done that”
•Achievements show 100% world completion
•Character select screen shows 100% medal
•Received standard map completion chest
What did not work:

•No gifts of exploration
•No ingame e-mail (not even for map completion!)
•No star above my character according to other players

i got the same problem as well! kindly look in this matter