Saw this Official Support Notice:
Upon deploying Krayt Dragon from Unit Samples in Inventory, the following error message appears:
"Command Failed! The server was unable to execute the command. Please reload and try again. If the problem continues please contact customer support.
The STAR WARS Commander team is aware of this issue and actively working on a solution. Until the update is released, we recommend not using Krayt Dragon to avoid this error.
NOTE: This article will be updated once the fix is released.
Keeping Everyone Informed...