Improvement of the management of messages (in the code, no changes for the user). and addition of new output messages related to the results of the model fitting (MSY & MSE values and their confidene limits, visibility of the lines corresponding to fitted values for noteworthy values of V in the 3D graphs).
Management of the access to the MSY-MSY graphs in the "Plots" menu when they are not available (CPUE=f(V) and abnormal results on MSY & MSE values or width of the confidence intervals).
Improvement of the management of extremas of axes in the different plots.