Help with error message and unable to save project

Help, please. need to finish as going on holiday tomorrow :(

spent morning creating a template and it won't save.

I am getting the error

Error one:
The project file could not be saved
Cannot access a disposed object
Object name 'StoryPackage'

When I try to save to a local drive, I get

Error two:
\documents/template.storytemplate
file not found
check the name file and try again

when I try to save to a USB or dropbox I get error one

when I change from a template to a storyproject I also get error one.

I have switched off all syncing.
I have searched for temp file. there isn’t one
I have rebooted the computer.
It was saving first thing but not now. I have updated the software though since first save 

I have managed to publish to review 360 so have something to physically copy from. but that will take hours