I was working on my project last night and when I saved it, an error message popped up saying the file is damaged and cannot be saved. And it caused InDesign to crash and since then I'm unable to open the file.
I've tried making copy or placing the file into new document and both don't work...
Please help advise if there's any other way than starting over?
Start by deleting the recovery data so ID can launch: InDesign crashes upon launch while attempting to recover a damaged document (note that the paths in this article point to HIDDEN folders, so you need to find out how to show hidden folders on your system if you don't know already)
Once ID is launched successfully, try to open the last saved version of your file (if it was saved successfully any time before the crash). If not, you're out of luck and you'll have to start from 0.