I had ran ethereum for some time for developing. I had upgrade to the latest Mist 0.8.10, Wallet 0.8.10 and geth 1.6.5 on Windows 10. after this, everything seems to break, everytime i start my mist it will shows "node connection error".
After i deleted everything from User\Appdata - mist, wallet, geth and reinstall mist again (without separately installing geth). it is working ok until i switch from main to testnet. the same problem occured.
anyone have experience to resolved this issue and switch from main to testnet seamlessly?
i have no problem running geth from command line before launching mist or wallet. It will sync all the blockchain when mist starts.