You can try uninstalling the program as explained here:
After that reinstall RealPlayer using the alternate(full) installation file. To do so, please follow these steps:
- Go to: http://www.real.com/ and download RealPlayer.
- Run the downloaded installation file and wait until the following window appears and close it.
- Click the "Alternate Installer" button. This will download the full installation file, which is larger.
- Run the downloaded full installation file and follow the steps to install RealPlayer.
If you have any additional questions, please let us know.