Strange project view bug. Some Scripts are expandable/collapsible

I have a strange bug in the editor Windows 7 Unity Free version 3.5.7f6

In My project view, some of my scripts have become expandible/collapsible. See attached image. File MB2_LOD.cs is split into a parent called “MB2_LOD”, a child called “script” and another child called “MB2_LOD”. Each script seems to be divided into a collapsible tree of three things. Some folders are fine (one script is one script). Others divide each script into a collapsible tree.

I have tried exporting the scripts and importing the scripts into a clean project and they appear fine in the new project.

I have tried “Reimport all” on the bad project but the scripts still are split.

Is this a setting somewhere? Has anyone else encountered this?

Thanks

Had this problem. The following steps worked for me, but I don’t know if it will work everytime:

  • drag the offending script files outside of the project folder (somewhere safe)
  • I deleted the scripts’ corresponding .meta files (I am 99% sure this is nothing to do with it, but just for the record)
  • Reimport All … this takes ages
  • drag the script files back into the project folder.