Setting custom system target file fails in R2018a

Our custom system target file for code generation has among other things this setting:

rtwgensettings.SelectCallback = 'valmetdna_select_callback_handler(hDlg, hSrc)';

 The valmetdna_select_callback_handler.m file:

function valmetdna_select_callback_handler(hDlg, hSrc)
  % Solver
  slConfigUISetVal(hDlg, hSrc, 'Solver', 'FixedStepDiscrete');
  slConfigUISetVal(hDlg, hSrc, 'SolverMode', 'SingleTasking');
  slConfigUISetVal(hDlg, hSrc, 'StopTime', 'Inf');

    % Optimization/Signals and Parameters
    slConfigUISetVal(hDlg, hSrc, 'InlineParams', 'on');

    % Data Import/Export
    slConfigUISetVal(hDlg, hSrc, 'SaveTime', 'off');
    slConfigUISetVal(hDlg, hSrc, 'SaveOutput', 'off');
    slConfigUISetVal(hDlg, hSrc, 'SignalLogging', 'off');

    % Diagnostics/Sample Time
    slConfigUISetVal(hDlg, hSrc, 'InheritedTsInSrcMsg', 'none');

    % Code Generation/General
    slConfigUISetVal(hDlg, hSrc, 'GenCodeOnly', 'on');

    % Code Generation/Interface
    slConfigUISetVal(hDlg, hSrc, 'SupportNonFinite', 'off');
    slConfigUISetVal(hDlg, hSrc, 'GRTInterface', 'off');
    slConfigUISetVal(hDlg, hSrc, 'MatFileLogging', 'off');

    % Valmet DNA
    slConfigUISetEnabled(hDlg, hSrc, 'DnaLicenseName', false);

end

The following error messages appear in the Matlab Command Window when the target is selected in the Model Configuration Parameters dialog.

Warning: Reference to non-existent field 'popupstrings'. 
> In RTW.TargetBrowser/uploadTarget
  In targetBrowserCloseCB
  In rtwprivate (line 16) 
Reference to non-existent field 'popupstrings'.

Error in configset.internal.data.ParamStaticData/createFromTLC

Error in configset.internal.data.ParamStaticData

Error in configset.internal.data.ConfigSetAdapter/setupTLC

Error in configset.dialog.HTMLView/prepareData

Error in configset.dialog.HTMLView/refresh

Error in configset.internal.data.ConfigSetAdapter/refresh

Error in configset.internal.data.ConfigSetAdapter/update

Error in configset.internal.data.ConfigSetAdapter/callback

Error in configset.internal.data.ConfigSetAdapter/setupListener>@(varargin)obj.callback(varargin{:})

Warning: Error occurred while evaluating listener callback. 
> In slConfigUISetVal
  In valmetdna_select_callback_handler (line 4)
  In stfInitTarget>loc_eval (line 137)
  In stfInitTarget (line 118)
  In RTW.TargetBrowser/uploadTarget
  In targetBrowserCloseCB
  In rtwprivate (line 16)

Steps to repeat problem: 1) Open new model File -> New -> Blank Model. 2) Open Simulation -> Model Configuration Parameters -> Code Generation 3) Select the custom target.

This code generation target has worked ok before. The issue came with R2018a update.

Answer 1

[Jussi Peltonen]

The problem was solved by adding line

rtwoptions(Idx).popupstrings = '';

to each index in the tlc file.