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

[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
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