I am using OS 9.2 All the tools the model disappears when I select the tool and hold down the cursor. Example: when selecting the rotational tool the model vanishes in the display window. Pressing the eye icon sometimes brings it back. For the most part when selecting or use the the tools the model vanishes. I have allocated as much as 200MB of memoey to the program, same problem. I has also tried turning off all except the basic extensions. Same problem. Mimic 1 never worked properly with partitioned hard drives.