[Zope] import from 216 to 213 fail

[Didier Georgieff]

Hello,

I'm trying to import a folder From 2.1.6 (Linux) to 2.1.3 (Linux) and i get this 
error :

Type d'erreur: TypeError
Valeur de l'erreur: ('len() of unsized object', , None)

I tried to import the zexp in 2.1.6 on Win and it works fine.
AFAIK i have the correct objects in the acquired folder.

I saw some postings on the list about that problem and i suspect it's the 
2.1.3. I'm i correct or do i have to check something else with my zexp ?
Thanks.
Didier Georgieff