This error means that the memory you have initially assigned to Insight before opening a project is insufficient.

See Allocating Memory for more details on allocating memory for Insight.

You can check the amount of memory Insight is using at any one time (see How do I see the amount of memory Insight is REALLY using?).

If the problem persists, or if you have any questions, please contact our support team at support@dugeo.com.

You may be asked to send data of your session from the Logs window for a clearer picture of what happened when the error occurred (see Viewing and Sending Diagnostic Logs).