What surprises me is that not all files had the same error.
So, I wrote a simple code to get rid of the extra characters in the filename/ extension.
% To replace '%E7%E7htm' by 'htm' % fn = '2Oct_09.%E7%E7htm' list = dir; jj = 1; while jj < length ( list) fn = list(jj,1).name; [pathstr, name, ext] = fileparts(fn) if strcmp(ext,'.%E7%E7htm') % ~list(jj,1).isdir % if strcmp(fn(9:15),'%E7%E7h') newfn= strrep(fn, '%E7%E7h', 'h'); % end system([ 'mv ' fn,' ' newfn]) % disp('asdf') end jj = jj+1; end