Why do I get the error message "out of environment space?"

The environment space required to run OptiStruct from within HyperMesh (both at the same time) is more than 8196 bytes. Increase the memory allocated to environment space to 16392 bytes by adding/modifying the following command in the config.sys:

SHELL= C:\COMMAND.COM /e:16392

For Windows 98, the above command should be change to:

SHELL= C:\COMMAND.COM /p /e:16392

The machine must be re-booted for any changes in the config.sys to take effect.