Summary: Users of OS X 10.9 Mavericks may have difficulty using the Intel online installers.
Affected versions: Intel Composer XE 2013 SP1, Intel Composer XE 2015 Beta ONLINE INSTALLERS ONLY.
Quick workaround: download the full (non-online) package and install from that .dmg file.
Symptoms: While opening the .mpkg package for the compilers, a warning message appears with the message "m_ccompxe_online_*.mpkg" or "m_fcompxe_online_*.mpkg" can't be opened because it is from an unidentified developer.
This is a problem for the online installation packages for Intel compilers on OS X through Composer XE 2013 SP1 Update 3 and Intel Composer XE 2015 Beta versions. We hope to have a fix for future online installation packages. For now, simply download and use the full installation disk image (non-online installer dmg package)
However, you can work around the problem. Instead of double-clicking the .mpkg file, right-click the .mpkg and select OPEN as shown below.
Next, a window will warn you that you are about to open a package from an unknown developer. Select OPEN to continue to the installation as show below: