I was running a masternode without any problem in v1.0.1.0, but after update to v1.0.2.0 I'm not able to restart it again.
I recieved this message when asking masternode status in windows qt wallet masternode status.
Not capable masternode: Could not connect to XX.XXX.XXX.108:51472
I have scanned port 51742 online and it's open

Any help will be appreciated

Without more information no one can help you. Is this a local Masternode, or a remote/local setup? Did you do anything in your data directory when upgrading? Any other information you can think of?