I had exactly the same problem....this is what you must do to fix it:
Here are the commands you must give to have back the e-smith-manager after
installing some rpm with problems.
chmod 550 /etc/e-smith/web/panels/
chmod 550 /etc/e-smith/web/functions/
chmod 550 /etc/e-smith/web/common/
chmod 755 /etc/e-smith/events/actions/
Timothée