Project Builder error... never seen before

[GeeYouEye]

What is it and what does it mean:

 

[Nermal]

It the error consistent? Or has it only happened once?

 

[GeeYouEye]

not consistent, but happened twice, while I was coding something. Thing is though, I can't reproduce it; I deleted what I'd just typed and typed it again, but the error didn't pop-up.

 

[mj_1903]

Looks like an indexing error. If it crashes PB then generally it is. Simply clean the project (Build -> Clean) and then recompile and it should be fine.

Random things like that happen all the time but they do nothing. XCode doesn't have any that I have noticed.