I'm installing FasterCSV (sudo gem install fastercsv) but when I'm
using it with Rails I get and "uninitialized constant FasterCSV" error.

So - in the gem directory when running rake I get a whole bunch of
permission errors like:

  1) Error:
test_append(TestFasterCSVInterface):
Errno::EACCES: Permission denied - ./test/temp_test_data.csv
    ./test/tc_interface.rb:16:in `initialize'
    ./test/tc_interface.rb:16:in `setup'

but when running sudo rake everything is fine.

Are the two problems (the Rails error and the permission error) related
to each other?

/megl