No suitable image found / required code signature missing

I've got several errors (shown below) from my storyboard which I can't solve.

I've found several similar issues here and on the web, but nothing I've tried seems to help.

I've even gone back to a backup from several days ago and that seems to have the issue to.

I have installed Xcode 8.1 GM but I haven't access this project with it.

I've since uninstalled it.

I've updated cocoa pods, also gone back to an older version I was on previously

error: IB Designables: Failed to update auto layout status:      
dlopen(MyFramework.framework, 1): no suitable image found.         
Did find:    
MyFramework.framework: required code signature missing for 'MyFramework.framework'         

error: IB Designables: Failed to render instance of btnCircleGeneral:      
dlopen(MyFramework.framework, 1): no suitable image found.         
Did find:    
MyFramework.framework: required code signature missing for 'MyFramework.framework'

I've tried deleting derived data / restarting, I am code signing my nested framework already.

My guess is that I've updated something which Xcode 8.1 uses, but is causes issues with Xcode 7.3.1.

Also it could be something to do with provisioning although my app runs fine in the simualtor and validating an archive is fine too.

I'm not ready to move to Xcode 8 at this time as there seems to a lot of issues with my storyboard.

ANY help appreciated.