OpenLDAP 2.4.16: can not add multiple 'member' attributes to object groupOfNames

["O. Hartmann" <ohartman@zedat.fu-berlin.de>]

Hello,

I try to add multiple member attributes to an object of type 
groupOfNames and I fail. The same is for objectClass groupOfUniqueNames. 
Whenever I try to add the multi-attribute, I receive an error like 
'info: member: value #1 invalid per syntax, dec: invalid syntax'. I can 
add exactly one attribute of type 'member' for this object.
Well, I'm confused, since this worked in older OpenLDAP versions (I'm 
now using 2.4.16). The client(s) I try to add attributes are 'ldapadd' 
with a regular LDIF file (file works well if only ONE member-attribute 
is specified), LUMA and LAM. All have their described problems.
I guess there is a knob I've overseen or I do something conceptionally 
wrong with OpenLDAP 2.4.
Can you help?

Regards,
Oliver

P.S. Server is OpenLDAP 2.4.16 on FreeBSD 7.2 and 8.0, for information.