Hello.
From the last two updates of test package my update in terminal finished with this:
Fetched 165 MB in 29s (5.621 kB/s)
(Reading database ... 188155 files and directories currently installed.)
Preparing to unpack .../krita-testing_2+git20150429+r73203-51-dk~ubuntu14.04.1_i386.deb ...
Unpacking krita-testing (2+git20150429+r73203-51-dk~ubuntu14.04.1) ...
dpkg: error processing archive /var/cache/apt/archives/krita-testing_2+git20150429+r73203-51-dk~ubuntu14.04.1_i386.deb (--unpack):
trying to overwrite '/opt/project-neon/include/calligra/KoPointerEvent.h', which is also in package krita-2.9 2+git20150402+r74195-52-dk~ubuntu14.04.1
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Preparing to unpack .../krita-testing-dbg_2+git20150429+r73203-51-dk~ubuntu14.04.1_i386.deb ...
Unpacking krita-testing-dbg (2+git20150429+r73203-51-dk~ubuntu14.04.1) ...
dpkg: error processing archive /var/cache/apt/archives/krita-testing-dbg_2+git20150429+r73203-51-dk~ubuntu14.04.1_i386.deb (--unpack):
trying to overwrite '/usr/lib/debug/opt/project-neon/bin/gmicparser', which is also in package krita-2.9-dbg 2+git20150402+r74195-52-dk~ubuntu14.04.1
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Errors were encountered while processing:
/var/cache/apt/archives/krita-testing_2+git20150429+r73203-51-dk~ubuntu14.04.1_i386.deb
/var/cache/apt/archives/krita-testing-dbg_2+git20150429+r73203-51-dk~ubuntu14.04.1_i386.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

Can somebody help me please what is the problem?
Thanks in advance!

Hi Alex -- I think you've got the distribution krita already installed. Please uninstall that before you install krita-testing.

Ahaaam... OK. Still newbie
Thanks Boudewijn!

Hello Again.
Sorry but probably I am still not understand how linux and packages work.
I uninstall everything, with the software manager, and try to instal in terminal again krita. Actually I can't install in any way krita 2.9.4 Not at all, no way...
Even if i tried with software manager.
This massage came after I tried to install in terminal:

alexs@alexs-Dell-System-Inspiron-N7110:~ > sudo apt-get install krita-testing krita-testing-dbg
Reading package lists... Done
Building dependency tree
Reading state information... Done
Recommended packages:
create-resources pstoedit krita-testing-l10n
The following NEW packages will be installed:
krita-testing krita-testing-dbg
0 upgraded, 2 newly installed, 0 to remove and 249 not upgraded.
Need to get 0 B/145 MB of archives.
After this operation, 603 MB of additional disk space will be used.
Selecting previously unselected package krita-testing.
(Reading database ... 185425 files and directories currently installed.)
Preparing to unpack .../krita-testing_2+git20150506+r73263-54~ubuntu14.04.1_i386.deb ...
Unpacking krita-testing (2+git20150506+r73263-54~ubuntu14.04.1) ...
dpkg: error processing archive /var/cache/apt/archives/krita-testing_2+git20150506+r73263-54~ubuntu14.04.1_i386.deb (--unpack):
trying to overwrite '/usr/share/mime/packages/calligra_svm.xml', which is also in package calligra-data 1:2.8.5-0ubuntu6~ubuntu14.04~ppa1
dpkg-deb: error: subprocess paste was killed by signal (Broken pipe)
Selecting previously unselected package krita-testing-dbg.
Preparing to unpack .../krita-testing-dbg_2+git20150506+r73263-54~ubuntu14.04.1_i386.deb ...
Unpacking krita-testing-dbg (2+git20150506+r73263-54~ubuntu14.04.1) ...
Processing triggers for shared-mime-info (1.2-0ubuntu3) ...
Unknown media type in type 'all/all'
Unknown media type in type 'all/allfiles'
Unknown media type in type 'uri/mms'
Unknown media type in type 'uri/mmst'
Unknown media type in type 'uri/mmsu'
Unknown media type in type 'uri/pnm'
Unknown media type in type 'uri/rtspt'
Unknown media type in type 'uri/rtspu'
E: Sub-process /usr/bin/dpkg returned an error code (1)
alexs@alexs-Dell-System-Inspiron-N7110:~ >

Everithing works well until the 2.9.x versions...
Any sugesstion are more than welcomed.
Thanks in advance!

PS: please don't remind me David's article... one day i probably take time to build it, but until... have the hard way:)

The new packages are incompatible to the calligra-* packages. Simply remove the package "calligra-data" and you're fine

Awesome. Works well. thank you for help.
Please tell me, this was an info that I should know about it, or it works just for those who understand well the programming part? Or I missed something in the article with the new release?
just Ask.
Thanks again.

It's not really something to know about
Beginning with 2.9.4 we are installing the krita ppa versions correctly into the system, so the users have (finally) menu entries and file associations in place. This also removed some legacy packaging stuff that isn't maintained anymore.
Normally there shouldn't be problems updating the package. You most likely (un)installed Krita from the official repository before and the calligra-data package wasn't removed at that point (e.g. apt-get autoremove removes old dependencies that aren't needed anymore).
That being said, I added calligra-data as a conflict now, so in the future the packages will take care of this automatically.

Hope this helped and kind regards

definitely!
Thank you for your time!