Timestamps (566) and assets (567) maps out of sync.

Hello. I am currently a student and, as a student, have learned a great lesson to back up my files. Unfortunately, I chose to do it after I spent 18 hours on a project and then upgraded my Unity to the new 3.5. Now, when I try to access my project, all that is left is the names of the items and pink water. I keep getting the following error but do not know what this means nor how to fix it. Can anyone PLEASE help me. I would be eternally greatful as I was so happy with what I had accomplished in my project. Thank you in advance for any willingful help!

Timestamps (566) and assets (567) maps out of sync.

I found a solution that worked for me.

I simply deleted the Library folder from my project in windows explorer. Unity rebuilds it for you when you open the project. that seemed to do it for me. No time lost putting anything back together.

Hope this works!

3 Easy Steps to Fix Unity Time Sync Error ?
November 13, 2015

This is a Quick Fixed that worked for me and for those receiving a Unity Time Sync Error!

Most sites are going to tell you to delete your Unity Library and Re-Import All Assets. While this may end up being the fixed, First Try This:

Look at the file Error in Unity Console window, If all the folders it references leads back to one folder then you can do this.

  1. Open Computer, Navigate your C:// drive to find that folder.

  2. Drag that folder to your Desktop. ( Keep that window you found it in “Open” )

  3. After it compiles, Re-Drag it back to it’s Folder Window.

That’s All…

Unity will re-import the file structure and Time Sync is Fixed.

http://www.hart3dartist.com/blog/

Im also having the same problem. Now when I try to open a folder it opens every single folder in the project and I get a huge list… along with the pink objects. I can re-assign textures but my project is still messed up . … any fix?

This may help

http://wajahatkarim.com/2014/07/unity3d-bug-fix-timestamps-and-assets-maps-out-of-sync/

hey guys,

i also encountered the problem after not touching my project for two weeks. I reimportet my Assets which solved the problem for me. Hope this might help someone.

Update:
The fix below is not permanent, neither anything else I have tried so far.
Apparently it is due to a bug in Unity 5.5, due to an unknown issue. Though annoying, it apparently hasn’t effect any projects. It might get fixed it 5.6, until then the best solution imo is to ignore it.

Asset Menu > Reimport All did the job for me.

Also note, when I tried Reimport All
from the Project Explorer. Not sure
why. Could be it doesn’t work every
time, and we have to do it more than
once?

All you have to do is simply Re-Import all the Assets once again. Right Click on the project panel and click the “Re-Import All Assets”. This is gonna solve all your issues.

On Linux uppercase and lowercase letters are different characters. So, you can have in assets two files “files” and “Files”. In Unity3d is make this error.
If you work on Linux ( and maybe Mac ) you should check assets files and catch files with same name but different case letter.