Package clash ezPublish 3.7 to 4.0.0

Friday 25 July 2008 1:05:52 am

Hello,

I've created a package of a content class from an ez Publish 3.7 installation, and tried to import it in an ez Publish 4.0.0 installation.
This is the error I got from the debug output:

"Error: eZTARArchiveHandler Jul 25 2008 09:55:17

Invalid checksum for file "��������]]s۸��gW�@�ajoUl���Ѭ�8s}7q\��S��H��
E꒔ϯ_�$%ʒȶ�LH���$Z$�n�����q�;���0�e[IU�0" : 66799 calculated, 1 expected

Error: Jul 25 2008 09:55:17

Failed extracting package definition file from var/ezwebin_site/cache/packages/import/8_classes

Error: Jul 25 2008 09:55:17

Uploaded file is not an eZ Publish package"

Any suggestions?

Thanks