586 - Bug with zipper

[sdb]

the pop up of the message box still seems to appear when adjusting zip compressing level and then pushing on the "übernehmen" button.

-------------------------
When I adjust the compress level and I then click on the ok button an error message box pops up:

Message Box: An Error ..... close application / continue application ....

[inglorious]

confirm, to reproduce:
- select file, then from Menu: File/Pack
- click "Configure" button
- Zip Packer tab
- change compression level
- click Apply

[Marek]

Fixed for the release 587.