Hi Zopers .. Using PTKSnap.tgz , I find lib\python\Products\ZPatterns\DynPersist.so lib\python\Products\ZPatterns\DynPersist.o lib\python\Products\ZPatterns\DynPersist.pyd lib\python\Products\ZPatterns\DynPersist.c in the archive. This looks just fine for Linux use, but I'm on W2K without a C compiler .. does anyone have the corresponding .dll (it would be a .dll, wouldn't it?) -- jean