Problem install extension 4.2.14

[sebastiano.cala]

hi, i have Windows 7 32bit . i installed virtual box 4.2.14 . After i tried to install Oracle_VM_VirtualBox_Extension_Pack-4.2.14-86644.vbox-extpack , but i received that error:

Installazione dell'Extension Pack C:/Users/Sebastiano_Cala'/Desktop/Oracle_VM_VirtualBox_Extension_Pack-4.2.14-86644.vbox-extpack non riuscita.

The installer failed with exit code 2: VBoxExtPackHelperApp.exe: error: Missing --sha-256 option

rcExit=2.

Codice 'uscita: E_FAIL (0x80004005) Componente: ExtPackManager Interfaccia: IExtPackManager {3295e6ce-b051-47b2-9514-2c588bfe7554}

Please , help me to resolve that error.

[Frank Mehnert]

Did you upgraded from an older version of VirtualBox? If so, which version was it?

[sebastiano.cala]

i had the VirtualBox-4.2.12-84980-Win.exe . Before install new version (4.2.14) , i deleted old version.