I meet problems with the last version of QGIS (Lyon 2.12.3) 64bits on Windows 7.
The software crashes as soon as I load a SHP layer or use SpatiaLite layers (created from OSM data).
Besides, each time I open QGIS desktop, I get the following error message:
I tried to uninstall/install again the software, to empty all directories with QGIS stuffs, to empty temp directories, nothing changes.
Moreover, even after unstalling QGIS, when I try to install it again, I get the message that QGIS is still installed on my computer.
I cannot use the app anymore...
Does anyone could help me ?