Whilst compiling the C code of a closed loop multibody problem I encounter the following errors:

"""
MOP01_d_stable_and_shifted_and_2rods.Platform_03lsy.c:8890:51: error: use of undeclared identifier 'MOP01_d_stable_and_shifted_and_2rods_Platform_initialAnalyticJacobianNLSJac159'
  linearSystemData[0].initialAnalyticalJacobian = MOP01_d_stable_and_shifted_and_2rods_Platform_initialAnalyticJacobianNLSJac159;
                                                                                                                                  ^
MOP01_d_stable_and_shifted_and_2rods.Platform_03lsy.c:8902:50: error: use of undeclared identifier 'MOP01_d_stable_and_shifted_and_2rods_Platform_functionJacNLSJac160_column'
  linearSystemData[1].analyticalJacobianColumn = MOP01_d_stable_and_shifted_and_2rods_Platform_functionJacNLSJac160_column;
                                                                                                                                    ^
MOP01_d_stable_and_shifted_and_2rods.Platform_03lsy.c:8903:51: error: use of undeclared identifier 'MOP01_d_stable_and_shifted_and_2rods_Platform_initialAnalyticJacobianNLSJac160'
  linearSystemData[1].initialAnalyticalJacobian = MOP01_d_stable_and_shifted_and_2rods_Platform_initialAnalyticJacobianNLSJac160;
                                                                                                                                ^
MOP01_d_stable_and_shifted_and_2rods.Platform_03lsy.c:8915:50: error: use of undeclared identifier 'MOP01_d_stable_and_shifted_and_2rods_Platform_functionJacNLSJac161_column'
  linearSystemData[2].analyticalJacobianColumn = MOP01_d_stable_and_shifted_and_2rods_Platform_functionJacNLSJac161_column;
                                                                                                                                   ^
MOP01_d_stable_and_shifted_and_2rods.Platform_03lsy.c:8916:51: error: use of undeclared identifier 'MOP01_d_stable_and_shifted_and_2rods_Platform_initialAnalyticJacobianNLSJac161'
  linearSystemData[2].initialAnalyticalJacobian = MOP01_d_stable_and_shifted_and_2rods_Platform_initialAnalyticJacobianNLSJac161;
                                                                                                                                    ^
6 errors generated.
"""

Apparently, the Jacobian initialization variables are undeclared. Playing with different DASSL Jacobian settings or changing the integration method (e.g. Radau5) makes no difference. Apparently, it's model related...  Help much appreciated.