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

[Nathan Woodrow]

Very strange indeed.

- Nathan

On Tue, Oct 11, 2011 at 10:59 PM, Purves Ross <rmpurves at ntlworld.com> wrote:

> OK, thanks for the tip re file number! Fingers crossed it's not that
> though.
>
> Sorry - now I get you. You mean can I load the layer called
> 'VectorBackgroundMapMarch2011' in its own right into a fresh project, right?
> Here's the rub - and also why I was confused by your question - there's no
> apparent layer with that name in the project! That's the name of the overall
> .qgs file, not a layer within it. Seems strange?
>
> Many thanks!
> Ross
>
>
>
>
> On 11 October 2011 13:53, Nathan Woodrow <madmanwoo at gmail.com> wrote:
>
>> 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
>>>>>
>>>>> _______________________________________________
>>>>> Qgis-user mailing list
>>>>> Qgis-user at lists.osgeo.org<mailto:Qgis-user at lists.osgeo.org>
>>>>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20111011/8004ccc8/attachment.html>