<t>Thank you for your prompt reply. <br/>
<br/>
I followed your instructions in number one above:<br/>
Launched the Console program and clicked "Clear Display". <br/>
<br/>
However I could not Launch Sweet Home 3D.<br/>
When I clicked on it, it bounced on the Dock for a few seconds but did not ...

<t>I downloaded the Sweet Home 3D 2.2 Installer version. <br/>
To install it, I clicked on the .dmg file to expand it, then dragged the Sweet Home 3D 2.2 application folder to the desktop. When I clicked on the application in this folder, it bounces on the Dock for a very seconds, but does not open ...