cp three20/src/../Build/Products three20/Three20Core/*.h: No such file or directory

If you’re getting this error, it’s because you’ve updated Three20, and they’ve changed the way their library works.

The fix is here on github.com.

One key aspect:

I’m getting a “No such file or directory” error for a Three20 import.

All headers are now grouped by the library in which they reside. This means that if you’re importing a header from the UINavigator library, that you’ll need to use Three20UINavigator/ instead of Three20/. If you’re not sure which library a particular header resides in, just do a find src -name SomeHeader.h to find which library it’s in.

Three20UI, Three20Core, and Three20Network are some of the new directories (libraries).