If you see an error message indicating that QuickBooks is low on memory, you may want to increase the amount of memory allocated to QuickBooks. The recommended amount of memory to allocate to QuickBooks is 8000KB (or 8 MB), but very large company files may require even more memory.
Close the windows for any other applications that are running. This may solve the problem. If it doesn't, follow the instructions below.
Try increasing the memory by 500K at a time, until you no longer see the low memory error message.