Hi,
Remember there's a difference between ECC and Netweaver version.
ERP EHP6 is the version of software component SAP_APPL (606) and can be installed as Netweaver 7.00 EHP3 SAP_BASIS (703) , SAP_ABA (703)
On the other hand try to download the lastest SPM from Marketplace to install it.
Installations and Upgrades - N"SAP NETWEAVER"SAP EHP3 FOR SAP NETWEAVER 7.0"SOFTWARE PROVISIONING MGR 1.0
Finally ABAP+JAVA is not supported.
Install first ABAP (Primary Application Server) then JAVA (Additional Application Server) with different SID.
Regards.