Here is solution:
 //Get URL
 EndPos := Pos('">Overview</a>', HTML);
 if EndPos > 0 then begin
  curPos := PrevPos('<a href="', HTML, EndPos);
  AddFieldValue(mfURL, 'http://web.archive.org'+Copy(HTML, curPos + 9, EndPos - curPos - 9));
 end else
  AddFieldValue(mfURL, MovieURL); 
  
 //Get URL
 EndPos := Pos('">Overview</a>', HTML);
 if EndPos > 0 then begin
  curPos := PrevPos('<a href="', HTML, EndPos);
    AddFieldValue(mfURL, 'http://web.archive.org'+Copy(HTML, curPos + 9, EndPos - curPos - 9));
 end else
 //AddFieldValue(mfURL, MovieURL); // Changed to:
 AddCustomFieldValueByName('Urlw', '<link url="' + MovieURL + '">' + MovieURL + '</link>'); 
 AddCustomFieldValueByName('Urlw1', '<link url="' + MovieURL + '">' + MovieURL + '</link>'); 
    
 //Get Review URL
 if GET_REVIEW then begin
  EndPos := Pos('">Review</a>', HTML);
  if EndPos > 0 then begin
   curPos := PrevPos('<a href="', HTML, EndPos);
   ExtraLinks[smReview] := 'http://web.archive.org'+Copy(HTML, curPos + 9, EndPos - curPos - 9);
  end;  
 end; 
 
 //Get Cast URL
 EndPos := Pos('">Cast</a>', HTML);
 if EndPos > 0 then begin
  curPos := PrevPos('<a href="', HTML, EndPos);
  ExtraLinks[smCast] := 'http://web.archive.org'+Copy(HTML, curPos + 9, EndPos - curPos - 9);
 end; 
 
 //Get Credits URL
 if GET_CREDITS then begin
  EndPos := Pos('">Production Credits</a>', HTML);
  if EndPos > 0 then begin
   curPos := PrevPos('<a href="', HTML, EndPos);
   ExtraLinks[smCredits] := 'http://web.archive.org'+Copy(HTML, curPos + 9, EndPos - curPos - 9);
  end; 
 end; 
  
 //Title 
 curPos := Pos('<span class="title">', HTML) + Length('<span class="title">'); 
 EndPos := PosFrom('</span>', HTML, curPos);
 
 AddCustomFieldValueByName('Titlew', Copy(HTML, curPos, EndPos - curPos)); 
 
 
 //Poster
 curPos := PosFrom('<tr><td valign="top"><img src="', HTML, EndPos);
 if curPos > 0 then begin
  curPos := curPos + Length('<tr><td valign="top"><img src="');
  EndPos := PosFrom('"', HTML, curPos);
  
  ExtraLinks[smPoster] := 'http://web.archive.org'+Copy(HTML, curPos, EndPos - curPos);
  if Pos('noimage', ExtraLinks[smPoster]) > 0 then
   ExtraLinks[smPoster] := '';
 end;
I attach the script, which is now corrected.
[attachment deleted by admin]