If something is changed on the PC used to run LightSpace/SpaceMan/SpaceMatch you will see a 'Protection Error' warning.
The change will likely be hardware based (new additional hard drive, graphics card, etc., but could be a major OS change too.
When the 'Protection Error' warning is seen you will need to contact Light Illusion to request your License Registration to be re-set.
You will need to include your license code with the request for a re-set, as well as information on why the re-set is required: a hardware change to the PC; a large OS Update; replacing an old PC, etc.
Note: The License Code must be provided as text within the body of an e-mail, not as a picture attachment.
A license reset will be performed as quickly as possible, often immediately, but can take up to 24 to 48 hours, depending on location and timing.