System Generator IP gets locked after upgrade to Vivado 2016.2

[bulle]

The System Generator IP's are locked then I open the block design after my Vivado upgrade. I have regenerated all the System Generator IP's and refreshed the repository in the Project settings. The new IP's includes the recommended versions of subcores if I look in the sours files. It seems that in my block diagram the old IP's is still linked in, with there old subcores. If I add an IP, Vivado accept it and have no complains (accepted IP have the colored System Generator emblem).  Can any one help me with this problem?

[bulle · Accepted solution]

Problem solved. The block design included one IP-core not present in the IP Catalog (system generator). That mistake case all the cores to be locked. Installing the right IP-core then Vivado automatically unlock all the IP-cores.