[Qgis-user] QGIS 1.6 project causing 1.7 to crash

[Nathan Woodrow]

I recall hearing about a bug where layers fail to load if there is a certain
number of files in the project but this might be something unrelated.

I mean can you load
/mnt/bunker/ross/Research/PhD/NewMapMarch2011/VectorBackgroundMapMarch2011
in QGIS on it's own in a fresh project.

- Nathan

On Tue, Oct 11, 2011 at 10:51 PM, Purves Ross <rmpurves at ntlworld.com> wrote:

> Hi Nathan,
>
> OK - by counting the number of occurances of '<maplayer' in the project
> file, I count 50 layers. Sounds a lot but there were no problems in 1.6 with
> this number!
>
> Sorry to be stupid, not sure what you mean by load the file by itself. Are
> you saying that there is a way of selectively loading layers on opening a
> QGIS project file? Or do you mean opening the file in a text editor or
> something. If the latter, then it certainly loads the XML OK and there's no
> evidence that the file is corrupted.
>
> Thanks again for the help!
> Cheers
> Ross
>
>
> On 11 October 2011 13:44, Nathan Woodrow <madmanwoo at gmail.com> wrote:
>
>> How many layers do you have in this project file?  And can you load the
>> file by itself?
>>
>> - Nathan
>>
>>
>> On Tue, Oct 11, 2011 at 10:35 PM, Ross Purves <RMP at lutonsfc.ac.uk> wrote:
>>
>>> Hi Nathan,
>>>
>>> Very many thanks for the quick response! OK, running from the command
>>> line gives me slight more info, to be sure:
>>>
>>> [Tue Oct 11 13:34:26 RMPT43:NewMapMarch2011 ]$ qgis
>>> VectorBackgroundMapMarch2011
>>> Warning: loading of qgis translation failed
>>> [/usr/share/qgis/i18n//qgis_en_GB]
>>> Warning: loading of qt translation failed
>>> [/usr/share/qt4/translations/qt_en_GB]
>>> Warning: Couldn't load Python support library: Cannot load library
>>> /usr/lib/qgispython: (/usr/lib/libqgispython.so: cannot open shared object
>>> file: No such file or directory)
>>> Critical: Data source is invalid
>>> Critical:
>>>
>>> Additionally, when I start QGIS this way I get a pop up window within the
>>> graphical interface that says:
>>>
>>> The layer
>>> /mnt/bunker/ross/Research/PhD/NewMapMarch2011/VectorBackgroundMapMarch2011
>>> is not a valid layer and can not be added to the map
>>>
>>> The strange thing is that I'm pretty certain there is no problem with the
>>> project file. It's timestamp reads 22 April, when I last worked on it. I.e.
>>> the version of QGIS has changed but my file has remained constant.
>>>
>>> Many thanks!
>>> Ross
>>> ________________________________________
>>> From: Nathan Woodrow [madmanwoo at gmail.com]
>>> Sent: 11 October 2011 13:26
>>> To: Purves Ross
>>> Cc: qgis-user at lists.osgeo.org
>>> Subject: Re: [Qgis-user] QGIS 1.6 project causing 1.7 to crash
>>>
>>> Hi Ross,
>>>
>>> That sounds a bit strange.  Can you start QGIS from the terminal and see
>>> what the output is when it locks up.
>>>
>>> - Nathan
>>>
>>> On Tue, Oct 11, 2011 at 10:19 PM, Purves Ross <rmpurves at ntlworld.com
>>> <mailto:rmpurves at ntlworld.com>> wrote:
>>> Hi there,
>>>
>>> I've updated my Ubuntu 10.10 installation to use QGIS 1.7. I put a lot of
>>> work into a project using QGIS 1.6 but it won't open in 1.7. The layers all
>>> appear but then the screen freezes as though QGIS is rendering the resulting
>>> map forever.
>>>
>>> A bit of googling revealed that there was a bug at some point which
>>> required the placement of 'gdal' between all <provider></provider> tags in
>>> the project XML file in a scenario like this. However, I tried this and it
>>> didn't work. I also have read various posts that say the use of 'on the fly'
>>> project appeared to cause problems going between 1.6 and 1.7. The project in
>>> question does indeed use on the fly projection.
>>>
>>> As a final note, I have an ECW raster layer in this map that requires the
>>> modified GDAL to work. I thought that the crash might be to do with the
>>> upgrade having removed my modified version of GDAL. I therefore recompiled
>>> it all and have checked to see that my version of 1.7 can now read ECW files
>>> and it can (when they are presented a a fresh layer and not as part of the
>>> problematic project).
>>>
>>> This is a really, really important project to me and I do need to get it
>>> back if at all possible. Please can anyone help?
>>>
>>> Very many thanks!
>>> Ross Purves
>>>
>>> _______________________________________________
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>>> Qgis-user at lists.osgeo.org<mailto:Qgis-user at lists.osgeo.org>
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>>>
>>>
>>>
>>>
>>
>
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