Probably doing nothing wrong.
Did my example search in system32 work or did it fail?
I can't recreate the problem and I don't like to offer any idea that begin with the word "try" but now that you have an example up some other folks might have some ideas.
This has worked for some folks:
Navigate to this folder:
C:\Users*Your user name\AppData\Local\Microsoft\Windows\1033*
Rename the file StructuredQuerySchema.bin to something you can remember like:
StructuredQuerySchema.xxx
Reboot your system (may not be necessary) and check Search again.
If things are back to normal you can delete the StructuredQuerySchema.xxx file at your leisure.