LibreOffice 4.4 (PPA): Extension can't be installed: Message: com.sun.star.uno.RuntimeException) "unknown error!"

Juan José Magaña Redondo on Feb 05, 2015 09:47AM GMT at http://support.mendeley.com/customer/portal/questions/11325906-mendeley-plugin-not-working-in-libreoffice-4-4- claims:
"I have Libreoffice 4.4 (ppa:libreoffice-4-3/ppa) and Mendeley 12.4. I had problems with Mendeley 13 plugin, so I decided to downgrade Mendeley instead of Libreoffice. Everything's working fine. I had to tweak things a bit, though."

If so, it would be great to know what change in mendeley 12->13 broke the extension on Ubuntu. If Mendeley is in proper version control, that should be trivial to identify with the information above.

Hi - Find attached Mendeley 1.12.3 file, I can reproduce the exact problem with it as well.

We haven't changed anything relevant to the plugin in 1.12 -> 1.13 (just a minor VBA code change). I've found that when intalling and re-installing sometimes the plugin gets correctly installed but I don't have steps to reproduce. My guess is that Juan José Magaña Redondo might have had this.

The Mendeley openoffice plugin code is available here: https://github.com/Mendeley/openoffice-plugin

I've attached the Mendeley-1.12.3.oxt extension to make it easier to test in case that you want to try.

In case that helps, the same bug appears in Zotero, which hasn't changed it's LibreOffice add-on in more than a year. It also appears to affect the language toolbar, the third add-on that I'm aware of that relies on LO's Java. Zotero's .oxt is here:
https://github.com/zotero/zotero-libreoffice-integration/tree/master/install

@karcher-b: Please dont mix multiple issues or scope-creep this one. To resolve a bug, it helps to boil it down to the _smallest_ change that breaks the product.

Any information that does not help in that regard should better be filed in a bug report on its own.

I'm not sure I understand. As cpina (who e-mailed me about this) notes in his original bug report, Zotero and Mendeley use the same technology and approach (and significant code overlaps) in their LibreOffice add-ons. With the arrival of LibreOffice 4.4 in the Ubuntu repositories, both products received multiple, identical bug reports with identical error messages in short order, all from Ubuntu users.
I understand you want to narrow down problems to the smallest change possible. The reason I posted here is that you seem to be suggesting to look for a change in Mendeley's plugin, whereas what cpina and I describe very strongly suggests that said change occured somewhere between the last version of LO 4.3 (which works fine with all versions of both products) and 4.4 on the Ubuntu repositories.
It's your product, you know best, but given that Zotero is mentioned multiple times in the original bug report, I think claims of scope creep aren't warranted.

Confirming the same problems with mendeley 1.12.3 from comment 3.

@karcher-b: The rules are simple: Unless you have triaged a bug down to really _know_ that it is same root issue, it isnt. This clearly hasnt happened here and guesswork simply based on "identical", but very, very generic error messages dont help.

commenting out the Scripts/MendeleyDesktopAPI.py in the manifest makes the error go away, so the issue is clearly in that file.

FWIW, TuesdayPython from https://gerrit.libreoffice.org/gitweb?p=sdk-examples.git;a=summary also fails to install. Thus some generic problem with application/vnd.sun.star.uno-component;type=Python in extensions.

However, internal letter and fax wizard (also Python) seem to work.

Debugging find the exception being thrown from here:
http://opengrok.libreoffice.org/xref/core/desktop/source/deployment/gui/dp_gui_extensioncmdqueue.cxx#820

I have finally been able to have Libreoffice 4.4 (via ppa) and Mendeley 13.3 working. The same as the user shaneonabike comments on https://forums.zotero.org/discussion/46297/ , by completely uninstalling the plugin, then updating and then reinstalling the plugin, the problem seems to be sorted when you open Libreoffice. I hope it might help others!

Status changed to 'Confirmed' because the bug affects multiple users.

Works in the installation directory during the build, so we are either missing parts when installing or some paths are off.

Caused by http://cgit.freedesktop.org/libreoffice/core/commit/?id=982f199a98a7d82e0109077882a645f1a442049e -- we need to use ure instead of ure-link now.

For what it's worth I believe the issue comes when the old items are removed and then the new ones are attempted to be installed. If I didn't remove them manually first this failed every time.

Then when you restart LibreOffice they are actually there, but not functioning go figure.

This should be fixed in package libreoffice-1:4.4.0-1ubuntu2~vivid1 which is now in the LibreOffice fresh ppa at: https://launchpad.net/~libreoffice/+archive/ubuntu/ppa/

Excellent Björn! I'll test in about 12 hours and report it here.

Hi - I've tested and it works as expected (Ubuntu 15.05 and libreoffice-1:4.4.0-1ubuntu2~vivid1 fresh PPA). Out of interest: do you have any plans to fix this problem for users who use https://launchpad.net/~libreoffice/+archive/ubuntu/libreoffice-4-4 repostiory and Ubuntu 14.10?

Regards,

@cpia: I copied the package over to the libreoffice-4-4 ppa. As for other builds: 4.4.1 will be released real soon now, so I guess I will update along with that.

Hi, I just want to share that with today release - LibreOffice 4.4.1.2 40m0(Build:2) - the problem with mendeley (I have version 1.13.4) is solved. Thanks so much!
PS: I updated with ppa uri: http://ppa.launchpad.net/libreoffice/ppa/ubuntu

The plugin work with Mendely 1.13.5-dev1 and LO 4.4.1-rc2 on Ubuntu 12.05 LTS, however, the font colours on the plug-in toolbar are incorrect. They are all white/transparent and not like the other toolbars. See attached.

@cement_head: a/ Please dont mix multiple issues into one bug report. b/ Please ensure bugs are indeed LibreOffice fault, not a bug in the extension itself, then file a bug c/ Note that PPA backport versions are not Canonical-supported.

This bug was fixed in the package libreoffice - 1:4.4.1-0ubuntu1

---------------
libreoffice (1:4.4.1-0ubuntu1) vivid; urgency=medium

  * new upstream release, fixes printing bug (LP: #1419521)
  * adapt/kill ure-link for upstream changes (LP: #1419836)
 -- Bjoern Michaelsen <email address hidden> Thu, 05 Mar 2015 19:28:08 +0100