Sony Movie Studio won't open projects

So I use Movie studio platinum 13 (64bit) build 943

All of a sudden I cant open any old projects, it has the loading bar and says opening project... if i try to exit it says operation in progress. I have;

Restarted computer
Reinstalled
Moved projects to a different folder
Tried opening .bak (back up) files
Renaming projects
I have started a brand new project and saved it, that cant be opened again

Any ideas? also do you have to PAY for Sony's tech support? WTF

PC spects

Intel Core i7 3770 @ 3.40GHz
Asus Nvidia GeForce GTX 660ti GPU
Asus P8Z77-V lx Motherboard
8GB G.Skills ARES DDR3-1600 RAM
Corsair RM 750 Gold Rated PSU
Western Digital Black 1TB 7200rpm HHD
Samsung 840 Evo (250gb) Boot SSD
Windows 7 64 bit

Update,

Pressing Control + Shift opening movie studio and clearing all cashes fixed problem