I have installed Ethereum Wallet on Ubuntu 14.04. After the installation was completed, I realized that my Testnet (Morden) mode was disabled. Looking in the Develop -> Network menu, the Main network is selected and I cannot change it to Testnet. The mining function on Testnet is also disabled.
I tried to update the blockchain by running the command:
I then ran Ethereum Wallet. The banned besides the "send button" has now changed to "TEST-NET" with a red color. But the mining function is still disabled.
When I tried to use the hotkey "ctrl+shift+2" to change to Testnet, a popup to input new password appeared. But after I entered the password, Ethereum Wallet automatically shut down.
Please help me get back the Testnet & Mining functions.
Thanks a lot.