"TASK ERROR: Undefined subroutine" when using UEFI/ovmf

[CFI]

I am using Proxmox 4.1 (updated from 4.0) and as I need PCIe-passthrough I tried to use UEFI/ovmf, but as soon as I set this I get the following error when starting the VM:

TASK ERROR: Undefined subroutine &PVE::Tools::file_copy called at /usr/share/perl5/PVE/QemuServer.pm line 2712.​

Does anybody know how I can fix this?

 

[CFI]

...I run update&upgrade again and now it seems to be solved...