Please check https://help.ubuntu.com/community/RestrictedFormats Go to section Macromedia Flash (although yours is gplflash) and read the troubleshooting part.
If that solves your problem then let me know.
Please check https:/ /help.ubuntu. com/community/ RestrictedForma ts
Go to section Macromedia Flash (although yours is gplflash) and read the troubleshooting part.
If that solves your problem then let me know.