Imported From: http://groups.google.com/group/in-portal-bugs/browse_thread/thread/3766e4e2373bcba3#
I've tested The installation of 5.0.1 and it fails on security step, when it
uses curl to verify, that "/system" directory is not writable. Problem
happens, because curl module in php is disabled by default and in case when
it's missing and get used, then strange things start to happen. In most
hosting curl is installed, but just in case I propose to add new step (just
after path checks), that will determine required php module presence before
even trying to install In-Portal. For example curl, libxml and so on. Maybe
we could write some descriptive information about each module (e.g. why it's
required), so user will know if it's critical for him to install such module
in php, or not.
CheersP.S.
I report this on behalf of SergeyG.