Bad Piggies loads forever

I am trying to play Bad Piggies (http://www.badpiggies.com/) but it is seems to be stuck on the loading screen (I waited 10 minutes).

Here is the log :
pierre@pierre-MacBook:~/.PlayOnLinux/wineprefix/BadPiggies/drive_c/Program Files/Rovio/Bad Piggies$ wine BadPiggies.exe
Mono path[0] = 'Z:/home/pierre/.PlayOnLinux/wineprefix/BadPiggies/drive_c/Program Files/Rovio/Bad Piggies/BadPiggies_Data/Managed'
Mono path[1] = 'Z:/home/pierre/.PlayOnLinux/wineprefix/BadPiggies/drive_c/Program Files/Rovio/Bad Piggies/BadPiggies_Data/Mono'
fixme:win:EnumDisplayDevicesW ((null),0,0x7f7e51c,0x00000000), stub!
fixme:win:EnumDisplayDevicesW ((null),0,0x7f7de38,0x00000000), stub!
fixme:dxgi:dxgi_output_GetDesc iface 0x143c10, desc 0x7f7e490 stub!
fixme:wbemprox:wbem_locator_ConnectServer 0x149428, L"\\\\.\\root\\cimv2", (null), (null), (null), 0x00000000, (null), (nil), 0x7f7e504)
fixme:d3d:debug_d3dformat Unrecognized 0x36314644 (as fourcc: DF16) WINED3DFORMAT!
fixme:d3d:wined3d_get_format Can't find format unrecognized (0x36314644) in the format lookup table
fixme:d3d:debug_d3dformat Unrecognized 0x34324644 (as fourcc: DF24) WINED3DFORMAT!
fixme:d3d:wined3d_get_format Can't find format unrecognized (0x34324644) in the format lookup table
fixme:d3d:debug_d3dformat Unrecognized 0x5a574152 (as fourcc: RAWZ) WINED3DFORMAT!
fixme:d3d:wined3d_get_format Can't find format unrecognized (0x5a574152) in the format lookup table
fixme:d3d:debug_d3dformat Unrecognized 0x5a534552 (as fourcc: RESZ) WINED3DFORMAT!
fixme:d3d:wined3d_get_format Can't find format unrecognized (0x5a534552) in the format lookup table
fixme:win:GetRawInputDeviceList (pRawInputDeviceList=(nil), puiNumDevices=0x32d714, cbSize=8) stub!
fixme:win:GetRawInputDeviceList (pRawInputDeviceList=(nil), puiNumDevices=0x32d708, cbSize=8) stub!
fixme:win:RegisterRawInputDevices (pRawInputDevices=0x32df60, uiNumDevices=1, cbSize=12) stub!
fixme:win:RegisterDeviceNotificationW (hwnd=0x3002c, filter=0x32df84,flags=0x00000000) returns a fake device notification handle!
fixme:imm:ImmReleaseContext (0x4002c, 0x14fe18): stub
fixme:win:RegisterRawInputDevices (pRawInputDevices=0x32f494, uiNumDevices=1, cbSize=12) stub!
fixme:d3d:query_init Unhandled query type 0xc.
fixme:process:GetLogicalProcessorInformation ((nil),0x32f438): stub
fixme:win:RegisterRawInputDevices (pRawInputDevices=0x32f48c, uiNumDevices=1, cbSize=12) stub!
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.
fixme:wbemprox:wbem_locator_ConnectServer 0x1c6680, L"root\\cimv2", (null), (null), (null), 0x00000000, (null), (nil), 0x32f220)
fixme:exec:SHELL_execute flags ignored: 0x00004100
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.
fixme:d3d:resource_check_usage Unhandled usage flags 0x8.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: wine1.4-i386 1.4-0ubuntu4.1
ProcVersionSignature: Ubuntu 3.2.0-31.50-generic-pae 3.2.28
Uname: Linux 3.2.0-31-generic-pae i686
ApportVersion: 2.0.1-0ubuntu13
Architecture: i386
Date: Fri Oct 5 18:05:25 2012
ExecutablePath: /usr/bin/wine-preloader
ProcEnviron:
 TERM=xterm
 SHELL=/bin/bash
 PATH=(custom, no user)
 LANG=fr_FR.UTF-8
 LANGUAGE=fr_FR:en
SourcePackage: wine1.4
UpgradeStatus: Upgraded to precise on 2012-04-27 (161 days ago)