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?
Sorry, it's true, very few info.
It's a unique local masternode. To update the wallet, I simply closed the program and replace the old version for the new one in my ...\roaming\darknet directory. When I restarted the program and typed masternode status I recieved a first message of
"status" : "Not capable masternode: Wallet is locked."
That I haven't received never before.
If I unlock the wallet and try to restart the masternode the message of the top start to appear.