I'm trying to install Merb, first thing I got was an issue with  
sqlite3, but I fixed that by re-installing both the sqlite3 and  
datamapper.
Now I'm having an issue with nokogiri. Here's the problem:

dyld: NSLinkModule() error
dyld: Symbol not found: _xmlTextReaderConstXmlVersion

I'm on Mac OS X 10.4 Ruby 1.8.6 and yes, I've got libxml, libxml2,  
libxslt and their respective -devs

Any clues?