I am having a problem with the clip and the intersect tool on QGIS Valmiera. I have a large vector map of sublocations of a country and am trying to clip them to a district level since I do not need the data for the entire country. I have save both to the project CRS, and have done this multiple times. As a project CRS I am using the WRS 84/Pseudo Mercator (I am using the openlayers plugin for geographic reference). To clip I the large map goes into the Input vector area, and I have made a polygon to represent the district which i add in the "clip layer" field. Then when I clip (or use intersect), nothing ever appears. The layer is created, but is not seen anywhere on the map, and the attribute table, although the fields from the large map are present, has no values.
How can I fix this problem?