Type the following at the command line:
dbstop if error
Then run your code. When the error occurs, the code will pause with all variables intact. Examine the sizes etc involved to figure out why your code is requesting too much memory. A numeric matrix size 2040x2040 by itself isn't going to be a problem on any modern machine, so there must be something else going on (e.g., maybe you are storing a bunch of these in a loop and you finally broke the bank, etc).
