Project not opening in PE 15

I'm vexed.  Terribly, terribly vexed.  I have been opening and creating videos for months now.  All of a sudden it's not opening the videos and gives me a message the media is offline.  The music tracks are still playing, but the video won't open or allow me to open them.  The only thing that opens is a single page in all of my videos written in multiple languages that reads "media offline".  What the hoopla does this mean??  How do I open my videos? Is this a bug.  Did Adobe go offline? Do  I once again have to uninstall/reinstall PE 15 or is it something simple I need to do?  I purchased it in January 2016.... or is this just a one year subscription that runs out and you have to renew - I thought I bought it.  PLEASE HELP!