Virtual Box Extension package installation error!.....Solution required please :)

Failed to install the Extension Pack C:/Users/xyz/Downloads/Oracle_VM_VirtualBox_Extension_Pack.vbox-extpack.

Failed to load the main module ('C:\Program Files\Oracle\VirtualBox\ExtensionPacks\Oracle_VM_VirtualBox_Extension_Pack\win.amd64\VBoxPuelMain.DLL'): VERR_SYMBOL_NOT_FOUND - GetLastError=127.

Result Code: E_FAIL (0x80004005) Component: ExtPackManagerWrap Interface: IExtPackManager {70401eef-c8e9-466b-9660-45cb3e9979e4}