I am having the same problem following error:
"
The following modules failed while saving their changes, their state is unknown: samba The following modules failed while saving their changes, their state is unknown: samba at The following modules failed while saving their changes, their state is unknown: samba at /usr/share/perl5/EBox/GlobalImpl.pm line 742 EBox::GlobalImpl::saveAllModules('EBox::GlobalImpl=HASH(0x34547f8)', 'progress', 'EBox::ProgressIndicator=HASH(0xe73788)') called at /usr/share/perl5/EBox/Global.pm line 95 EBox::Global::AUTOLOAD('EBox::Global=HASH(0x347beb0)', 'progress', 'EBox::ProgressIndicator=HASH(0xe73788)') called at /usr/share/zentyal/global-action line 32 eval {...} at /usr/share/zentyal/global-action line 30
"
In my case, even with all the updates solved the problem.