[sane-devel] Epkowa failed to find all required interpreter API

Olaf Meeuwissen olaf.meeuwissen at avasys.jp
Tue Dec 19 01:52:07 CET 2006

Scott Barnham <sgb at manx.net> writes:

> Hi.
> I'm struggling to get an Epson Perfection 4180 Photo scanner to work
> with the Epkowa back-end.  I'm running Ubuntu Dapper.
> I get message: "Failed to find all required interpreter API".  I can't
> find any reference to this, so I'm a bit stuck.  Any idea what it means?

That there is something seriously wrong with the interpreter module
(libesint43.so) you installed or the backend you are using.

> scanimage finds the USB device and attaches.  libesint43.so is installed
> and it appears the back-end is finding it (scanimage used to error
> loading the library before I installed it from the rpm).  I can see the
> firmware file at /usr/share/iscan/esfw43.bin.  iscan fails to load,
> complaining it can't find libesmod.so.1 (which is there
> in /usr/local/lib), but I understand this isn't required by sane.

libesmod.so is only used by iscan.  If you use scanimage, xsane or any
other SANE backend, it is neither necessary nor used.

> This is the relevant output from: SANE_DEBUG_EPKOWA=255 scanimage -L
> [epkowa] attach_one_usb()
> [epkowa] SANE EPKOWA Backend 1.16.0-3 - 2005-06-29

Eh, this is way old ... and does not work with the current plugin

Do yourself a favour and get iscan-2.x, make sure you use the packages
for gcc-3.4 or later for both the iscan and plugin package and try

Ideally, you'd be using (as per download page[1]):


and install both with:

  $ sudo alien --install --scripts RPM_FILE

after you removed all traces of iscan from your system.

> [epkowa] attach(, 3)
> [epkowa] attach: opening
> [epkowa] attach_one_usb(libusb:005:006)
> [epkowa] SANE EPKOWA Backend 1.16.0-3 - 2005-06-29
> [epkowa] attach(libusb:005:006, 3)
> [epkowa] attach: opening libusb:005:006
> [epkowa] Found valid EPSON scanner: 0x4b8/0x118 (vendorID/productID)
> [epkowa] failed to find all required interpreter API
> [epkowa] close_scanner(fd = 0)
> Thanks for your help.

[1]  http://www.avasys.jp/english/linux_e/dl_scan.html

Hope this helps,
Olaf Meeuwissen                          EPSON AVASYS Corporation, SE1
FSF Associate Member #1962           sign up at http://member.fsf.org/
GnuPG key: 6BE37D90/AB6B 0D1F 99E7 1BF5 EB97  976A 16C7 F27D 6BE3 7D90
Penguin's lib!       -- I hack, therefore I am --               LPIC-2

More information about the sane-devel mailing list