Node will not join cluster after yum update

I have a 7 node cluster running, and wanted to add a couple more at another site, The new nodes will not join cluster, I keep getting a “no route to host” and “not a tar file”
errors, the same thing is happening when I do a yum update on an existing node. Any ideas on how to get it working again? I can get log files, or whatever you need? my 6 node cluster is down to 4 at the moment.

From what version to what new one have those nodes been updated to? Maybe it’s related to: http://www.percona.com/doc/percona-xtradb-cluster/errata.html#major-changes

Przemek,I have another post going with more info. http://www.percona.com/forums/questions-discussions/percona-xtradb-cluster/11755-cannot-for-the-life-of-me-add-a-node-to-my-current-cluster any help would be appreciated.