(In reply to Dr. Werner Fink from comment #5) > Created attachment 681158 [details] > Build log with gcc6/g++-6 > > -Wmisleading-indentation and template problems ... whereas I'm not sure if > this is a bug in xosview code or a missing/dropped feature in the ostream > implementation. A compiler that knows what it does... the code is confusing two variables: std::ifstream temp_file(_tempfile); std::ifstream high_file(_highfile); std::cerr << "Can not open file : " << temp_file << std::endl; std::cerr << "Can not open file : " << high_file << std::endl; It meant to print the file name, which is actually _highfile and _tempfile... ups