[Ardour-Users] Ardour segfaults when loading a previously fine session

Jonathan Stowe jns at gellyfish.com
Sat Sep 15 03:47:41 PDT 2007

On Fri, 2007-09-14 at 16:51 +0200, Arnold Krille wrote:
> Am Freitag, 14. September 2007 schrieb Joe Hartley:
> > On Fri, Sep 14, 2007 at 09:26:35AM -0400, lanas wrote:
> > >   Ardour2 segfaults when loading a previously fine session that was
> > > reloaded quite a few times..  This is one of the most complex session
> > > I've made so far, with recorded regions starting here and there on a
> > > track so I do not figure out how I can retrieve the sounds and paste
> > > all that together.  Notwithstanding the time it'd take.
> > This sounds suspiciously like the error I ran into a couple of weeks ago.
> > My problem turned out to be the use of the CAPS EQ plugin in my session.
> > There's something about the version (0.3.0) I had on my system, which was
> > installed as part of the Planet CCRMA distributrion for FC5, that did not
> > play well with Ardour 2.0.5.  I removed the CAPS RPM from my system, then
> > got the latest version (0.4.2) of the plugins from the source site,
> > installed them, and my session loaded fine after that.
> One problem with CAPS is that some plugins use the ":" in their name and 
> ardour uses the name to create xml-tags. But in xml the ":" is reserved to 
> distinguish namespace:tag. At least that was a problem here and gave crashes 
> from the libxml...

I might be looking in the wrong place but it appears to put the name of
the plugin in an attribute like:

   <Insert type="ladspa" id="DJ EQ" unique-id="1901" count="1">

now the colon in the name could potentially still cause a problem as
'id' is a special attribute for XML - unless I am missing something this
could also give rise to other problems as they should also be unique in
the document, however this definitely shouldn't cause libxml (or
anything else for that matter) to segfault.


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