L2J Server

I downloaded Your "L2j Server 6595 BETA", unpack + datapack, configured exactly as " L2j Server 6595 STABLE" and didn't working. Always java error: UnsupportedClassVersionError (major.minor 52.0).
Where is a problem ?
The same stable edition works perfectly.
I have newest java installed. (previos uninstalled).
Installed beta databases.
And always the same problem.
Login server, game server and Account menager same errors.
Please help.

Your java version? Java 1.8 is required for BETA

Thank You very much, now works, at last

I have a fast question. Im trying to get in instance of Sailren (in the STABLE version of files). All quests complete. Im standing by the statue and trying to get in. ("participate"), but nothing happen. Is possible (working ?) Sailren instance in this STABLE version of files ?

Cannot say about stable coz i got only beta files and from what i see AI is here so guess need to working.

"I wish to participate in clearing out Sailren and its followers."

That button require to have party / to be a leader / to have Gazkh quest item. So when click that text nothing show up?

Yes exactly, i have created 8 account, all 8 running (on the same second computer), i was created party: me and 7 others. We all standing by the statue (all requirments done) and when i click "Participate..." nothing happen. I thing this is not implemented on stable edition but im only asking.

I'm not sure if Sailren is implemented in STABLE, I'm sure it's done for BETA.

Yes, in Beta Sailren working. Thank You very much for all help.
Im really happy for now

In this BETA revision (location Chromatic Islands) Water Dragon Detractor dont drops Spirit of the lake (its used for healing Fafurion) and Fafurion Kindred dont drop SCALE (after he survive and disapear drops nothing).
Can someone help to selve that ?