Error When Adding Contract to Sales Order

Hello Group,

I was trying to add a field service contract to a sales order and received this error:

"All contract and renewal lines, based upon the sales order date, have been assigned to a sales order. Cannot add this contract to this sales order."

This error almost seems as if its telling me that the contract has already been assigned to a sales order. However this is happening with brand new contracts I make, that I know are not assigned to any sales orders. Does anybody know why I would be getting this error? Any help would be appreciated.

This is on Version 9.05.700c

Thanks,
Jarrad