Ok, there's no problem if I move the database folder in a different partition 
apparently, not sure why (I've write permissions in the problematic one).

On Thursday, April 25, 2013 2:43:46 PM UTC+2, [email protected] wrote:
> Yes, I had the same idea, it didn't work.
> 
> Daniele 
> On Thursday, April 25, 2013 2:24:51 PM UTC+2, Peter Bienstman wrote:
> > Try deleting the default.db_media/_latex directory inside your mnemosyne 
> > data directory. 
> > 
> > 
> > 
> > Peter
> > 
> > 
> > [email protected] wrote:
> > Ok, I'm with 2.2.1, but I get the same error:
> > 
> > @debian:~$ mnemosyne
> > This is dvipng 1.14 Copyright 2002-2010 Jan-Ake Larsson
> > [1] 
> > An unexpected error has occurred.
> > Please forward the following info to the developers:
> > 
> > Traceback (innermost last):
> > File "/usr/local/bin/mnemosyne", line 5, in <module>
> > pkg_resources.run_script('Mnemosyne==2.2.1', 'mnemosyne')
> > File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 499, in 
> > run_script
> > self.require(requires)[0].run_script(script_name, ns)
> > File "/usr/lib/python2.7/dist-packages/pkg_resources.py", line 1235, in 
> > run_script
> > execfile(script_filename, namespace, namespace)
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/EGG-INFO/scripts/mnemosyne",
> >  line 155, in
> > <module>
> > debug_file=options.debug_file)
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/libmnemosyne/__init__.py",
> >  line 202, in initialise
> > self.main_widget().activate()
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/pyqt_ui/main_wdgt.py",
> >  line 51, in activate
> > self.start_review()
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/libmnemosyne/component.py",
> >  line 120, in start_review
> > self.review_controller().reset()
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/libmnemosyne/review_controllers/SM2_controller.py",
> >  line 62, in reset
> > self.show_new_question()
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/libmnemosyne/review_controllers/SM2_controller.py",
> >  line 132, in show_new_question
> > self.update_dialog()
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/libmnemosyne/review_controllers/SM2_controller.py",
> >  line 204, in update_dialog
> > self.update_qa_area(redraw_all)
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/libmnemosyne/review_controllers/SM2_controller.py",
> >  line 237, in update_qa_area
> > self.render_chain, no_side_effects=True))
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/libmnemosyne/card.py",
> >  line 96, in answer
> > (self, render_chain, **render_args)
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/libmnemosyne/card_type.py",
> >  line 75, in render_answer
> > render_answer(card,
> > **render_args)
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/libmnemosyne/render_chain.py",
> >  line 142, in render_answer
> > return self._render(card, fact_keys, decorators, **render_args)
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/libmnemosyne/render_chain.py",
> >  line 153, in _render
> > card, fact_key, **render_args)
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/libmnemosyne/filters/latex.py",
> >  line 107, in run
> > img_tag = self.process_latex_img_tag("$" + match.group(1) + "$")
> > File 
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/libmnemosyne/filters/latex.py",
> >  line 87, in process_latex_img_tag
> > img_file = self.create_latex_img_file(latex_command)
> > File
> > "/usr/local/lib/python2.7/dist-packages/Mnemosyne-2.2.1-py2.7.egg/mnemosyne/libmnemosyne/filters/latex.py",
> >  line 78, in create_latex_img_file
> > shutil.copy("tmp1.png", img_name)
> > File "/usr/lib/python2.7/shutil.py", line 120, in copy
> > copymode(src, dst)
> > File "/usr/lib/python2.7/shutil.py", line 91, in copymode
> > os.chmod(dst, mode)
> > OSError: [Errno 1] Operation not permitted: 
> > '610f5cf4dcbf0cc6d653749b3c15c722.png'
> > 
> > 
> > On Thursday, April 25, 2013 1:53:41 PM UTC+2, Peter Bienstman wrote:
> > You are using a really ancient version.  Please upgrade to 2.2.1.
> > 
> > 
> > 
> > Cheers, 
> > 
> > 
> > 
> > Peter 
> > 
> > 
> > [email protected] wrote:
> > I copied my database folder to a new computer with debian wheezy and mnem
> >  osyne
> > 2.0-RC1 (No problems with the old computer). Now when I try to view a latex 
> > card it gives me this error (just for the first times, after I preview the 
> > card for 1 or 2 times the error disappear and the card get rendered, I 
> > can't do this for all the possible cards though):
> > 
> > Uncaught exception!
> > Traceback (innermost last):
> > File 
> > "/usr/lib/python2.7/dist-packages/mnemosyne/pyqt_ui/browse_cards_dlg.py", 
> > line 449, in menu_preview
> > PreviewCardsDlg(self.component_manager, cards, tag_text, self)
> > File 
> > "/usr/lib/python2.7/dist-packages/mnemosyne/pyqt_ui/preview_cards_dlg.py", 
> > line 42, in __init__
> > self.update_dialog()
> > File 
> > "/usr/lib/python2.7/dist-packages/mnemosyne/pyqt_ui/preview_cards_dlg.py
> > ", line
> > 72, in update_dialog
> > self.set_answer(card.answer())
> > File "/usr/lib/python2.7/dist-packages/mnemosyne/libmnemosyne/card.py",
> > line 96, in answer
> > (self, render_chain, **render_args)
> > File 
> > "/usr/lib/python2.7/dist-packages/mnemosyne/libmnemosyne/card_type.py", 
> > line 74, in render_answer
> > render_answer(card, **render_args)
> > File 
> > "/usr/lib/python2.7/dist-packages/mnemosyne/libmnemosyne/render_chain.py", 
> > line 142, in render_answer
> > return self._render(card, fact_keys, decorators, **render_args)
> > File 
> > "/usr/lib/python2.7/dist-packages/mnemosyne/libmnemosyne/render_chain.py", 
> > line 153, in _render
> > card, fact_key, **render_args)
> > File 
> > "/usr/lib/python2.7/dist-packages/mnemosyne/libmnemosyne/filters/latex.py", 
> > line 102, in run
> > img_tag = self.process_latex_img_tag("$" + match.group(1) + "$")
> > File
> > "/usr/lib/python2.7/dist-packages/mnemosyne/libmnemosyne/filters/latex.py", 
> > line 82, in process_latex_img_tag
> > img_fil
> >  e =
> > self.create_latex_img_file(latex_command)
> > File 
> > "/usr/lib/python2.7/dist-packages/mnemosyne/libmnemosyne/filters/latex.py", 
> > line 73, in create_latex_img_file
> > shutil.copy("tmp1.png", img_name)
> > File "/usr/lib/python2.7/shutil.py", line 120, in copy
> > copymode(src, dst)
> > File "/usr/lib/python2.7/shutil.py", line 91, in copymode
> > os.chmod(dst, mode)
> > OSError: [Errno 1] Operation not permitted: 
> > '25a4ba2a7730a9ceb14f5cb82f88f73c.png'

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