595 - Error when opening zip in other panel

[etc.]

Problem:
When I open zip file in other panel, second consecutive open will cause error.

How to reproduce:
1. Store Two zip files in active panel.
2. Select the first zip file in active panel.
3. Choose 'Folder -> Open focused -> Open folder in other panel'
4. Select the second zip file in active panel.
5. Choose 'Folder -> Open focused -> Open folder in other panel'

Result:
Error dialog will be opened. 'Directory name in not valid.'
Message in error dialog is not English, so I don't know the exact error message.

[Marek]

Fixed for the release 596.