Well, Amrita's script won't help you, that's for sure. I'm not sure who it would help as she seems to have dusted off a script written for the XP era and not written particularly well. For example, this script doesn't help anyone running with user privileges (which is everyone except Administrator on default UAC settings on Vista and later).
If you're only having a problem saving files then at least your solution is somewhat simpler than having to do a system-wide permissions reset.
Quick question: Windows isn't warning you about logging on with a temporary profile, or any issues with the user profile service is it? If so, don't follow these instructions.
I have Win7 here, so you may need to alter these instructions slightly because I don't think I've had to alter permissions on a Win10 system:
What I would do in your situation is fire up File Explorer, go into C:\Users, right-click on your username, Properties, Security, Advanced, Change Permissions.
If your username is in the list of entitled users, it should say that your user has full control and applying to this folder, subfolders and files. If so, I'd tick the box that replaces all child object permissions and then apply the change. If your user isn't listed it would surprise me, if so add it and give it full permissions. If it's there then double-click on it and give it full permissions. Then tick the child object permissions box and click on OK.
Resetting permissions can sometimes be a case of whack-a-mole so let us know what happens if it doesn't seem to go according to plan.