Keyur Kanade
Ansys Employee
Aside from the various license issues there is an ANSYS SpaceClaim settings & preferences folder stored in the temporary files. However, if this becomes corrupted (usually due to a system crash while the file is in use) ANSYS SpaceClaim will not launch.  Type %appdata% into the Windows Explorer panel and you'll see an Ansys folder and a SpaceClaim folder. Open the SpaceClaim folder and rename the "SCDM20.x" folder as "oldSCDM20.x".  Replace "x" with whichever version isn't launching.   Close Windows Explorer and launch SpaceClaim as normal.