News version downloaded, but when pressing wallet info in gallery app always having this err, bur able to download imeges to galery.

There seems to be no connection from the Novacash Gallery application to the Novacash Core Wallet. Novacash Gallery always need to be connected to the Novacash Core Wallet.
I see three options:
1) Your Novacash Core Wallet is not running
2) Your Novacash Core Wallet is not in server mode
3) Your Novacash Gallery application is not properly configured
For point 2) and 3) please refer to the Novacash Gallery User Manual:
https://www.novabit.cash/pages/7522.html(1. Precoditions/Preparation)
I have server=1 in conf file

and its able to download imeges to gallery and accept rewards, so...
All configured as well accept wallet encryption.

Hhm, that's tricky …
What's written in the status bar (footer) of the Novacash Gallery application? "NOT connected to Novacash Core Wallet" not "Cnnected to Novacash Core Wallet?
Some additional thoughts:
- If you change the configuration either in Novacash Gallery or Novacash Core Wallet, you need to restart the applications
- The RPC username and the RPC password must be identical in the Novacash Gallery and Novacash Core Wallet configuration file (but I assume you already checked this)
NEXT STEPS:
I'm going to implement some diagnose functions into Novacash Gallery to check connections to the Novacash Core Wallet. I hope this way we can localize the problem. Give me a few hours to do this. I'll let you know once a new version is available.
Thank you very much in supporting us to fix the problem. We'll send you some reward coins :-)