Big trouble with a different version of Unity, please help.

I use Dropbox to sync the project files, I always update Unity but my brother on another computer not. The problem is after I spend a mount to create a thing like this.

Turned to this after few minutes with the older version of Unity on another computer. Then I shut every thing off and return to my own PC but it too late. Look like every thing changed and I don’t know how to fix this.

It’s changed all of the things even open it on the updated version.

I lost 23 Levels, Ton of code, and Another thing that I don’t know. This is the disaster.

Use version control, and put the Library folder on the ignore list.

Agreed. But more to your immediate problem, dig an older version of the files out of Dropbox.

Welcome to using Dropbox for backing up actively developed projects. Naturally you will want to recover your files via their Dropbox history. You can do this by logging onto the Dropbox website, navigating to the file, clicking the “…” button for it and asking for the version history. Alternatively you could try the script below.

After you’ve recovered the files I highly recommend you never try to use Dropbox in this way again. Instead like @orb mentioned you should be using a Version Control System. Most of them aren’t free but they’re very cheap for the service they provide which is safety against losing days, weeks, months, etc of work.

Unfortunately Dropbox only supports recovering the history for a single file at a time. There is a Python script for restoring an entire folder but it’s two years old and appears to have been intended for Linux users originally so who knows if it will work correctly.

Using different versions of Unity on the same project is possible, but I would only recommend it for experts. It’s definitely not a beginner level thing you want to be doing.

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