Ubuntu – winetricks can’t install mfc42

I'm trying to have a Windows program (Janome Customizer) run with wine.
I have an "out of the box" Ubuntu 64bits 12.04 install, and just ran Software Center to update all packages.

Installation of Customizer went OK, then I run the program, a window appear, but nothing happens when I click a button. So I run the program with what I found in the shortcut installed by wine:

john@mylaptop:~$ env WINEPREFIX="/home/john/.wine" wine "C:\\windows\\command\\start.exe" /Unix "/home/john/.wine/dosdevices/c:/users/Public/Desktop/JANOME Customizer.lnk"

I get two warnings:

fixme:exec:SHELL_execute flags ignored: 0x00000100
fixme:exec:SHELL_execute flags ignored: 0x00004100

The Customizer window appear, and when I click a button this error is printed:

err:module:import_dll Library MFC42.DLL (which is needed by L"C:\\\\Program Files (x86)\\\\janome\\\\Customizer 10000 Plus\\\\MC9500\\\\MkStitch.dll") not found
err:module:import_dll Library MkStitch.dll (which is needed by L"C:\\\\Program Files (x86)\\\\janome\\\\Customizer 10000 Plus\\\\MC9500\\\\EasyImport95.exe") not found
err:module:LdrInitializeThunk Main exe initialization for L"C:\\\\Program Files (x86)\\\\janome\\\\Customizer 10000 Plus\\\\MC9500\\\\EasyImport95.exe" failed, status c0000135

So I googled for this error and tried to install mfc42 with winetricks, but I get the error:

john@mylaptop:~$ winetricks mfc42
Executing w_do_call mfc42
Executing load_mfc42
Executing mkdir -p /home/john/.cache/winetricks/vcrun6
Downloading
http://download.microsoft.com/download/vc60pro/update/1/w9xnt4/en-us/vc6redistsetup_enu.exe
to /home/john/.cache/winetricks/vcrun6
--2012-07-28 08:58:50-- 
http://download.microsoft.com/download/vc60pro/update/1/w9xnt4/en-us/vc6redistsetup_enu.exe
Resolving download.microsoft.com (download.microsoft.com)... 158.255.97.16,
158.255.97.65
Connecting to download.microsoft.com
(download.microsoft.com)|158.255.97.16|:80... connected.
HTTP request sent, awaiting response... 404 Not Found
2012-07-28 08:58:51 ERROR 404: Not Found.

------------------------------------------------------
Downloading
http://download.microsoft.com/download/vc60pro/update/1/w9xnt4/en-us/vc6redistsetup_enu.exe
failed
------------------------------------------------------

I tried to manually install mfc42 with other google results, to no avail. I would prefer to use winetricks. If I can't do it with winetricks, manual install belongs to another question.

Just to be sure, I tried booting on a live CD (USB key, actually), with Ubuntu 12.04 32bits. Installed wine through Software Center, but then running winetricks mfc42 yields the same error.

Interestingly, on another computer which I use daily, plugged into the same internet router, installing mfc42 works:

11:35:45 ~>winetricks mfc42
p11-kit: couldn't load module: /usr/lib/i386-linux-gnu/pkcs11/gnome-keyring-pkcs11.so: /usr/lib/i386-linux-gnu/pkcs11/gnome-keyring-pkcs11.so: cannot open shared object file: No such file or directory
Executing /usr/bin/cabextract -q /home/jrouquie/.cache/winetricks/vcredist.exe -d /home/jrouquie/.wine/dosdevices/c:/windows/system32 -F mfc42u.dll
Using native,builtin override for following DLLs: msvcrt
Executing early_wine regedit c:\winetrickstmp\override-dll.reg
Install of mfc42 done
winetricks done.

11:36:29 ~>winetricks mfc42
prerequisite vcrun6 already installed, skipping
Install of mfc42 done
winetricks done.

11:46:00 ~>

Thanks for any help installing mfc42.