I am having the exact same problem. I need to go back to my 1709 version as the 1803 version does not work due to a graphics card problem.
Microsoft updated the machine to 1803 this afternoon, now I try to do a restore previous version and does not work.
Then tried to do a system restore and get the stupid that it could not restore due to a file on OneDrive.
Booted in to safe mode and did a full HDD check, then opened a command line and remove all my OneDrive files/folders to make sure that are no clashes.
Tried System Restore again with the same error.
System Restore should only touch OS/System files and not my files on OneDrive. I think we have a serious bug in 1803.
Raoul