[Qgis-user] Clipper cannot computer bounding box of cultine

[Hannah Pethen]

I am using QGIS to clip a raster using a mask. All files and the project are in the same projection. I have tried with both 'on the fly reprojection' on and off. I have also tried clipping the raster in the form of a tif and as a asc file, but whatever I try the error comes up 'Cannot compute bounding box of cutline'. I have checked that the boundaries of the vector file are within the boundaries of the raster, but no matter how far inside the raster the vector file boundaries fall it still fails. I tried using 'extents' and it worked, but I need to be able to use the mask. 
 
Does anyone know what the problem is, or is this a bug. 
 
Thanks
Hannah
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