Error in ComputeObjectives

Hi Robert,

In the octopus' error log, the following error pops up:

"Error in ComputeObjectives, when retrieving objective values / constraints

 Error: Object reference not set to an instance of an object.
 InnerException:
 Source: Octopus
 StackTrace:    at GH_GA.GA.ComputeObjectives(List`1 inds, Boolean reinstate)"

Not precisely sure what could be resulting in this error?

Thanks

Yassin