[Zope] reinstall zope

after downloaded "page template", "ZUtils" aand "TAL" , i can't 'start' my zope-2.4.3 on my linux machine. file "start", line 2 reldir='dirname $O' ^ invalid syntax I download zope-2.5 becaause I do not find Zope-2.4.x-ti-zope.2.5. I build zope-2.4.5 but I can't start it Value error :computed value for NV_MAGICCONST deviates too much (computed 1.71277, expected 1.71547 I try a lot time. I need Zope. Can you help me Albert DURANTON