Game closed in the middle of JQ :(

This is a first for me, I was happily playing JQ (yes, happily! ) when an error msg popped up saying something about a problem and did I want to send an error report to Anet. I was so surprised I just clicked 'tes' and the game closed.

Nothing else on my pc was affected - does anyone have any idea what caused it?

Anyone else had this happen?

Has this only happened once or more times since - once in a very rare blue moon have i had this and i mean very rare - over 4 yrs of play and maybe ive had this 4 or 5 times.
All i did was restart gw client and it was fine - possibly a very rare glitch but unless its happening every time then it shoudlnt be a problem.
It closing i think was so it can send the details.
Btw 2 occasions i recall i also had severe lag - i think gw totally lost its connection an errored

Yeah, i had that problem yesterday during Fort Aspenwood and more 2 or 3 times in this last 3 years i play.

It's very rare so, not something i would really care about.

Ah ty - I won't worry about it then.....until the next time