Memory error

I got this error twice in a row after playing for like 20 minutes each time.
What’s happening?

Too many addons perhaps?

I was playing zombie survival…I will just delete all the sweps I have downloaded to see if it will work.

Post specs.

I heard this happens on some operating systems and the latest version of zombie survival.

It even happens to me on cs:s.

Edit: Try exiting out of some programs you have running.