I installed the content glider module and after installation i got this error reported in the reports ::::
File system Not writable The directory c:/wamp/tmp does not exist. You may need to set the correct directory at the file system settings page or change the current directory's permissions so that it is writable.
GD library PNG support 2.0 or higher
GD library rotate and desaturate effects 2.0 or higher The GD Library for PHP is enabled, but was compiled without support for functions used by the rotate and desaturate effects. It was probably compiled using the official GD libraries from http://www.libgd.org instead of the GD library bundled with PHP. You should recompile PHP --with-gd using the bundled GD library. See the PHP manual
I'm hosting on a free hosting, and i don't know where is the problem and how to solve it.