Requesting more GPU memory than available?

I'm periodically running a script that generates a uitable. It runs as expected the first few times then am error appears that MATLAB is requesting more GPU memory than available. The application then is forced to close. Have I reached a hardware problem (video card)? Is there something I can handle more efficiently in my script so that this doesn't happen? I appreciate any input.

[Joss Knight]

Please show the code you are running and the output error message.