Why is the error-"behaviour->GetBackup() == NULL"???

Hello,
I'm using Unity4.1.2f1,
Sometimes, there's an error message in the console window ... "behaviour->GetBackup() == NULL"..

There's only this simple message, no other additional information relating the error....
So, I can't infer what makes this error happening..??

The more strange thing, when I play again, this error message cleared and works normal...


What kind of this error message? and why??..

 

I get it all the time, seems to not affect anything.

 

I asked the same question on IRC and I got a reply from a user called Tak.

and he also added that

 

I tend to get them when i save and unity reloads whilst the scripts are saving.

 

Thanks Karsnen, I hope that they repair this error in the next patch!!

 

Our Team was able to fix this error. We had a game object that was using a script that was removed. We re-attached the script file but it gave the above error. We removed the script component from the game object and then re-created that script component with the right script. That cleared the error.

 

I actually had this issue after I moved the project to SVN, removing source control from the Library folder, deleting it and letting unity rebuild it fixed it...be warned it took ages to rebuild, around 20 mins!

 

Worked for me Thanks.

 

I think it has something do to with undo system.

Basically I had a script with some public attributes, I edited(1) those attributes then I removed from MonoDevelop few of them(2) because they were no longer needed. I started getting "GetBackup" error(3), I had just to find the game object with the attached script and then reattach the script. That caused to loss all attributes edits so I had to re-tune integer values.