Leap Bridge Concrete - Wind Load on Live

Hello,

When attempting to create the load combinations I receive the following message - "Dependent loads of type WL and master loads of type WS are not equal in number. Please specify same number of two loads when cross combinations option is turned off."

Currently I have 2 WS and 2 WL loads defined, with the WL set as dependent on WS. Can you clarify this message?

Thank you, 

Ben