In most of the cases the issues with video players can be caused by scratched disks, missing codecs, outdated versions of the libraries used by the product, applications that are opened and currently in use, etc. To fix this issue, firstly, download the latest version of the software from its official website. It's recommended to remove the old version before installing the new one. Secondly, install a new set of codecs though the Software Informer application's page (option recommended only for Windows machines).
Latest version of the software was released a few days ago.