Try creating a new User, creating a User with special characters, which Space Colony doesn’t recognise, could cause the problem. You should particularly avoid using ‘\’ (backslash), ‘/’ (slash), ‘*’ (asterisk), ‘ “ ‘ (quotes), ‘?’ (Question mark), ‘<’ (left angled bracket), ‘>’ (right angled bracket), ‘:’ (colon) and the “¦” (pipe).

 

Also, you may have created a ‘blank’ Username, try putting in a user name and see if that helps to solve the problem. You could also check whether the directory structure has been created in the user’s directory, as follows:
SPACE COLONY
USERS
<name>
campaigns / saves <both in the <name> folder>