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

[Marco Hugentobler]

Hi Ross

An approach is to save a project with one raster layer with 1.7, then compare 
the layer xml with the one of the 1.6 version. 
Might be quicker compared to dropping layers one by one.

If it still does not work, you could run QGIS with a debugger and see where it 
stops. 


Regards,
Marco



Am Dienstag, 11. Oktober 2011, 14.19:24 schrieb Purves Ross:
> 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