Right-click on Command Prompt and select Run as administrator.
When User Account Control asks you whether you want to allow changes, click Yes.
In the new window, copy and paste the following, pressing Enter after each of the commands:
regsvr32 vbscript.dll
regsvr32 wmp.dll
regsvr32 jscript.dll
Close down Command Prompt and restart your PC.
You may need to uninstall and reinstall the app.