gnome-color-manager invokes the g_spawn_command_line_* in various places, splicing file names into the command line string. This doesn't work reliably if the file name contains spaces or other funny characters. You should use g_spawn_sync or g_spawn_async, with an argument vector where the file name is passed separately. You may have to include a "--" argument before the file name to suppress option processing.
Again, not really a RHEL bug as we don't support calibration there due to the missing argyllcms. I have however committed this upstream for Fedora: commit a8ee35723d20f966981b07454968109f1dd8455b Author: Richard Hughes <richard> Date: Tue Jul 30 10:07:12 2013 +0100 Do not use g_spawn_command_line_sync() when spawning executables Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=958093