Hi, open OLD wallet client export keys to new Gui Wallet:
1 - Old client Wallet type: viewkey then copy PRIVATE key 2 - Old Client Wallet type: spendkey then copy PRIVATE key 3 - Open guiwallet 0.2.3 CANCEL PASSWORD PROMPT and choose Restore from Keys > again select middle restore from keys then enter Your old wallet address and keys 4 - Create a new password and name Wallet 5 - Done!