Problems on gimp.app updating

[Joshua Root]

Fabrizio Bartolomucci wrote:
> cc1: error:
> /var/folders/zz/zzzivhrRnAmviuee+++++++++++/-Caches-/com.apple.Xcode.0/SharedPrecompiledHeaders/ScriptExec_Prefix-gntvlnquiqoqbabqjbipnrgwmzsc/ScriptExec_Prefix.pch:
> No such file or directory
> cc1: error: one or more PCH files were found, but they were invalid
> cc1: error: use -Winvalid-pch for more information

Looks like Xcode's precompiled header cache is corrupt in some way. Try
clearing it by opening Xcode.app and selecting "Empty Caches..." from
the Xcode menu.

- Josh