VirtualBox won't uninstall old Extension Pack, with error message:
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}
Or install new Extension Pack, with error message:
Failed to install the Extension Pack C:/Users/Mark/Downloads/Oracle_VM_VirtualBox_Extension_Pack-4.2.16.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}