ID=-108 error

Hello all ,

Urgent request , i have to finish this  code with the help of scripting .

i am having 200 files in a folder , previously i have got error adobe illustrator not responding , and then i have got parm error all these problems now it is rectified , but now i am gettting error ("adobe illustrator can't finish previewing there is not enough memory in illustrator" ) after running for 100 files . can any one suggest me to add line to clear memory in illustrator so illustrator cant occupy any memory .

this is my part of the code, please help me it is so urgent ,sorry to disturb u all .

function read_ai()
{
    sourceFolder = Folder.selectDialog( 'Select the folder with Illustrator files', '~' );
    files = sourceFolder.getFiles(/\.(svg|ai)$/i);
    sourceFolder1 = Folder.selectDialog( 'Select the folder to save ai files', '~' );
       if(files.length == 0)
{
  //alert("Folder doesnot have any file");  

    }    

    if ( files.length > 0 )
     {
     //    //alert(files.length);

      for ( var file_iteration = 0; file_iteration < files.length; file_iteration++ )
     {
             var compare_title_name_fn_called  = 0;
           fileArray_title=[];
       sourceDoc = app.open(files[file_iteration]); // returns the document object      
 var fileExtension = sourceDoc.name.substr((sourceDoc.name.lastIndexOf('.') + 1));
 if(fileExtension=="ai")
 {
  var yog_lays= sourceDoc.layers;
    connector_array_inside_grp = [];
    for(var layer_iteration=0;layer_iteration<yog_lays.length;layer_iteration++)
    {
        var RANGE_group_check_flag=0;
        var compare_title_name_fn_called=0;
    if(yog_lays[layer_iteration].name=="RANGE" )
    {
        RANGE_group_check_flag=1;
        var yog_text=yog_lays[layer_iteration].textFrames;
        for(var text_iteration=0;text_iteration<yog_text.length;text_iteration++)
        {
           var ref_textframe =  yog_text[text_iteration].textRange.characters[0].size;
         if(ref_textframe==12)
         {
             
            fileArray_title.push(yog_lays[layer_iteration].textFrames[text_iteration].contents);
            }
        }
    }
   
   else if(yog_lays[layer_iteration].name=="Layer 1")
    {
         LAYER1_group_check_flag=1;
         var yog_grp=yog_lays[layer_iteration].groupItems;
        for(var text_iteration=0;text_iteration<yog_grp.length;text_iteration++)
        {
    if(yog_grp[text_iteration].name == "<CIRCUIT TITLE>")
          {
             fileArray_title.push(yog_grp[text_iteration].textFrames[0].contents); 
             }
         }
     }
 }
if(fileArray_title.length==1)
{
     color_empty_pathitem();
      remove_fuse_group();
        check_fuse_ungroup();
        rename_fuse_group();
         check_connector();
         check_connector_grp();
         check_connector_callout();
         move_rectangle();
         group_connector_name();
          check_text_empty_high();
           line_check1_unit_CAN(fileArray_title[0]);
          line_check1_unit_2_CAN(fileArray_title[0]);
          
           wave_unit_check();
           rectangle_inside_path_items_check(fileArray_title[0]);
               variant_terminal_check(fileArray_title[0]);    
             group_Circle_name_CAN(fileArray_title[0]);
               checking_circleGroup_CAN(fileArray_title[0]);
            check_unwantedline_CAN(fileArray_title[0]);
               renaming_path(fileArray_title[0]);
               renaming_CAN(fileArray_title[0]);
             line_pathitem_inside_CAN(fileArray_title[0]);
             
                       check_AAA_names();
                         error_check();             
                                                                                                                                                                                              
                }
            var saveOptions = new IllustratorSaveOptions();  
      var ai8Doc = new File(sourceFolder1);  
      
      sourceDoc.saveAs( ai8Doc, saveOptions );  
      sourceDoc.close();
            }
        }
    }
}