iOS Question Unknown Error

[JonPM]

I am unable to compile my project:

B4i version: 2.31
Parsing code.    Error
Specified argument was out of the range of valid values.
Parameter name: index

I don't have any errors/warnings in Logs tab. And I can't find any parameters named index.

Suggestions?

 

[JonPM]

I'm not sure what I did but now the error is gone...