File Encryption DialogBox Bug

A bug in "File Encryption" dialog box.

To reproduce the bug:

Open "File Encryption" from file menu (or click its icon in the toolbar), file Encryption dialog appears.
Encryption is selected, In "Files" section select "ASC".
In input file, select a file to encrypt.
In "Passphrase" section enter a password and confirmation.
In Key path section, select a key file.
Click "Start" button, you will get the error message "GPG format does not support double protection....".
Clear the passphrase and confirmation. then click the "Start" button, you still get the same error message.

Expected behavior:

Encryption process should start after clearing passphrase.

Environment:

Windows 10 & EncryptPad-0.5.0.1-Beta in portable-mode.

evpo / EncryptPad