Terracotta Discussion Forums (LEGACY READ-ONLY ARCHIVE)

Hello.

I come hereby to submit a problem I met while creating clustered instances using OpenTerracotta.
Indeed, starting the Terracotta server is no problem, but when launching client instances, I receive a warning:
************************** WARNING ************************
* Not Including Instrumented ConcurrentHashMap in boot jar
***********************************************************
---------------------- ERROR DETAILS ----------------------
+ Temp Error creating boot jar
+ Class not found: java.util.concurrent.FurureTask$Sync
-------------------------------------------------- ---------
But the program seems to launch, although it's not working as expected the clustering should.
After reading the "Terracotta Developer Console", I find that the launched clients do not appear in the Connected Customer tab.

I will like to know what's wrong; and if it's possible, how to fix the problem.
Thank you in advance.
PS : I'm working on a Windows7, with jre 1.7.0_55