id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host
10456,Cannot upgrade from extension pack 4.1.8r75467,keisoko,,"While trying to install extension pack 4.1.12 on Windows 7 Pro 64-bit host with Windows 8 Consumer preview and Solaris 11 guests it exits with the following error:

Failed to install the Extension Pack C:/Users/keisoko/.VirtualBox/Oracle_VM_VirtualBox_Extension_Pack-4.1.12.vbox-extpack.

The installer failed with exit code 1: VBoxExtPackHelperApp.exe: error: Failed to rename the extension pack directory: VERR_ALREADY_EXISTS


rcExit=1.

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

It wont even let me uninstall the older extension pack. It exits with the following error:
 
Failed to uninstall the Extension Pack Oracle VM VirtualBox Extension Pack.

The installer failed with exit code 1: VBoxExtPackHelperApp.exe: error: Failed to rename the extension pack directory: VERR_ALREADY_EXISTS


rcExit=1.

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

Please help. Thanks.",defect,closed,other,VirtualBox 4.1.12,duplicate,extension pack,,other,Windows