my macbook air keeps running out of application memory

Interesting. That shouldn't be enough to cause the kind of error you're getting.

Next time this happens, open Activity Monitor in Applications -> Utilities, and select the Memory tab. Which processes are taking up the most memory?

Hi Kensignton4466,

Which apps do you have open when the error occurs? How much resources are they taking up? Also, is one or more apps taking up a large amount of memory?