Tested with Gpg4win 2.1.0:
- Create new folder with umlauts (e.g. "testä")
- try to encrypt the folder via GpgEX (with gpgtar)
> Encryption failed:
"Input error: Error while running <PATH>/gpgtar.exe:
gpgtar: error stat-ing `testä': Das System kann die angegebene Datei nicht finden."