Hi, Your Externalizable StringWrapper does not have a default constructor and is not saved. Please enable logging to see the error messages. -Roman
On Friday, May 13, 2016 8:36 PM, kajzur <kaj...@o2.pl> wrote: Hi, thanks for response. This is link for git repository - https://gitlab.com/kajzur/temp.git - repository has no access restrictions, so every one can clone it. My config is in first mail :) Thanks! -- View this message in context: http://apache-ignite-users.70518.x6.nabble.com/Unexpexted-exception-tp4847p4929.html Sent from the Apache Ignite Users mailing list archive at Nabble.com.