sollution for me was:
In the terminal type: cd /usr/local/emhttp/plugins/dynamix.vm.manager/include
then: nano libvirt_helpers.php
now look for this line: $arrBlacklistClassIDregex = '/^(05|06|08|0a|0b|0c05)/'; and remove : 08|
save the file and now the coral is visable in the list to add to your VM.