Thanks for your reply! Below is the code that generates the error, if the user selects not to include a graph in the excel file (i.e. $graph==0) the error does not appear. I guess that means that it has to be the add_chart_ext command that generates the error

    if ($graph==1)
    {
        #Write values for run chart
        $hidden_worksheet->write(0,$stab_column_end+1,"Time");
        $hidden_worksheet->write_col(1,$stab_column_end+1,\@time_data)
+;
        $hidden_worksheet->write(0,$stab_column_end+2,"Speed 1");
        $hidden_worksheet->write_col(1,$stab_column_end+2,\@speed_1_da
+ta);
        $hidden_worksheet->write(0,$stab_column_end+3,"Speed 2");
        $hidden_worksheet->write_col(1,$stab_column_end+3,\@speed_2_da
+ta);
        $hidden_worksheet->write(0,$stab_column_end+4,"Speed 3");
        $hidden_worksheet->write_col(1,$stab_column_end+4,\@Speed_3_da
+ta);
    
        #Add run chart
        my $run_chart = $workbook->add_chart_ext('.\charts\run_chart.b
+in',"Step response run");
        $worksheet->store_formula('=Hidden data sheet!A1');
    }
[download]

There's alot more code generating a bunch information in the excel sheet before this snippet is executed, I don't know if that could affect anything. Furtheron, I have ensured that I have the bin-file run_chart at the indicated path.

Is there anything I'm doing wrong here?

Thank you in advance!

I'm at a loss to see how this is happening in Spreadsheet::WriteExcel, either inside or outside of a Cava package.

Could you add Devel::SimpleTrace to your program and post the stack trace of the failing code.

--
John.

maybe his $cwd isn't meshing with add_chart_ext('.\charts\run_chart.bin' or maybe he is filtering the packed modules through PodStrip or another one