Fresh install of 15b7 won't show color graded clips

I've just installed DR15 Beta 7 and opened a project I was working on in 15 Beta 6.
When the project opened in the Edit tab the clip that the cursor was on loaded as normal and played through in the viewer but every other clip shows up and plays as black. This also happens in the Color tab.
The only way to view the clips in either tab is by bypassing the color grade, which isn't very helpful.
Does anybody know how to fix this?
When the project opened in the Edit tab the clip that the cursor was on loaded as normal and played through in the viewer but every other clip shows up and plays as black. This also happens in the Color tab.
The only way to view the clips in either tab is by bypassing the color grade, which isn't very helpful.
Does anybody know how to fix this?