CodeIgniter Project Giving 303/Compression Error

Answer 1

CodeIgniter seems to have its own method of gzipping its output (Why, I don't know, but I'm not very familiar with CI.)

According to this forum entry, such an error can occur when PHP error messages screw up the compressed content. Adjusting error_reporting to E_ALL ^ E_NOTICE did the trick there.

Update: There also seems to be a CI config setting:

$config['compress_output'] = FALSE;