building the module... again...

Dear !

I used SuSE 9.0 (2.4.21) and scanner Plustek P12 (parport) and everything 
worked perfectly - even better than ...with windows, but...

I switch to Mandrake 2005 Lim. Edtition.

2.6.11-6mdk, AMD Athlon(tm) XP 2400+
gcc (GCC) 3.4.3 (Mandrakelinux 10.2 3.4.3-7mdk)

Sane packages:
libsane1-1.0.15-7mdk
xsane-0.97-1mdk
sane-backends-1.0.15-7mdk

I do have proper kernel source package installed, with proper symbolic link 
"touched":

lrwxrwxrwx   1 root root  17 kwi 23 11:29 linux -> linux-2.6.11-6mdk/
drwxr-xr-x  21 root root 696 kwi 23 11:29 linux-2.6.11-6mdk/


And I try to build the kernel modul pt_drv.ko:

In Mandrake it looks like:

[kajtek@neverhood plustek]$ pwd
/usr/share/doc/sane-backends-1.0.15/plustek

...and

[kajtek@neverhood plustek]$ ls
build/             MakeModule.sh             Plustek-USB.changes
FAQ                Plustek-PARPORT.changes   Plustek-USB-TODO.txt
Makefile.kernel24  Plustek-PARPORT-TODO.txt  Plustek-USB.txt
Makefile.kernel26  Plustek-PARPORT.txt

and

[kajtek@neverhood plustek]$ sudo sh MakeModule.sh
Password:
This script will try and build a suitable kernel-module for your system.
If you'd like to make the module WITH debug output, restart this script
with as follows:
./MakeModule.sh DEBUG=y
Press <ENTER> to continue or <CTRL><C> to cancel.

Check for root - done.

Check for kernelversion:
Using makefile for kernel 2.6.x
Build-directory:
/usr/share/doc/sane-backends-1.0.15/plustek/build
Removing build-directory - done.
Creating build-directory - done.

Linking source files...ls: 
/usr/share/doc/sane-backends-1.0.15/plustek/../../backend/plustek-pp_*.c: 
No such file or directory
ls: 
/usr/share/doc/sane-backends-1.0.15/plustek/../../backend/plustek-pp_*.h: 
No such file or directory
  - done.
Copying Makefile to build-directory - done.
Making the module...
make: Entering directory `/usr/src/linux-2.6.11-6mdk'
make[1]: *** Brak reguł do zrobienia obiektu 
`/usr/share/doc/sane-backends-1.0.15/plustek/build/plustek-pp_dac.s', 
wymaganego przez 
`/usr/share/doc/sane-backends-1.0.15/plustek/build/plustek-pp_dac.o'. Stop.
make: *** [_module_/usr/share/doc/sane-backends-1.0.15/plustek/build] Błąd 2
make: Leaving directory `/usr/src/linux-2.6.11-6mdk'
There were some build errors...

Could You send me any prompt what to do with this?
I am pretty familiar with linux but not with "coding, programming", I am a 
sociologist :)

On SuSE 9.0, Mandrake 9.0-9.2 based on 2.4.xx kernels I didn't have any 
troubles with building proper module, but on 2.6.xx I quit :(

Best regards,
Maciej.