App ran fine... restarted computer... error


I had the basic map view app up and running on my iPhone4 but after a restart I’m getting the following error:
Unable to read symbols for /Developer/Platforms/iPhoneOS.platform/DeviceSupport/4.2.1 (8C148)/Symbols/usr/lib/info/

The entire info directory is missing, not just the file.

So I went to that location and noticed that another version (4.2.1 (8C134)) has the file. Is it ok to copy the missing content over? Any idea on why this happened? I’m thinking my phone was updated but I don’t remember doing that in iTunes.