Source control: Can't check in DefaultEngine.ini

Hello,

we’re using SVN for our project and have it working mostly smoothly, but I’ve ran into a problem where I can’t check in DefaultEngine.ini. I checked it out by pressing the check out button in project settings, but can’t find a way to check it back in. In project settings it’s telling me that the file is “currently checked out”, like it’s supposed to.

The file doesn’t show up as checked out when I “Submit to Source Control”, so it doesn’t get included in my submits. I’ve tried committing it via Windows Explorer using Tortoise SVN, but that fails because “File is locked in another working copy”.

What am I missing? I’m sure there are many workarounds to this, but I’d like to understand if there’s something I’m doing wrong or don’t know how to do.

Thank you!