Windows 8 Host - error during extension upgrade if directory has national chars

[yesoos]

Installation of extension fails when you try to install that from a folder with special/national chars. Following error occurs:

Failed to install the Extension Pack C:/Users/Jędrzej/.VirtualBox/Oracle_VM_VirtualBox_Extension_Pack-4.2.16.vbox-extpack.

The installer failed with exit code 1: VBoxExtPackHelperApp.exe: error: Failed to open the extension pack tarball: VERR_PATH_NOT_FOUND ('C:/Users/Jędrzej/.VirtualBox/Oracle_VM_VirtualBox_Extension_Pack-4.2.16.vbox-extpack')

rcExit=1.

Result Code: E_FAIL (0x80004005) Component: ExtPackManager Interface: IExtPackManager {3295e6ce-b051-47b2-9514-2c588bfe7554}

It works perfectly fine when you upgrade/install extension from a folder without special/national chars.

[Carvalhais]

I can comfirm this bug as I'm having the same issue. Windows 7 64 bit host, NTFS filesystem.

[MrStalker]

I confirm. VirtualBox 4.3, same problem.

[dualism]

Works if opening virtualbox as administrator and importing the file directly from within the interface.

[vbox4eCS]

Same problem here. I run virtualbox as administrator as suggested, it resolved the french accent issue but it will not install with same error ! ( all previous release could be installed without any error)

See added error.jpg file

[aeichner]

Please reopen if still relevant with a recent VirtualBox release.