I am trying to use the Patch Analyst ArcGIS extension to create a hexagonal grid over my polygon shapefile which contains vegetation data. I am using the "Create Hexagonal Regions" function but I keep getting an error message "cannot open input .shp file". I initially was attempting this on a file that was in a geodatabase but I also tried it on the file exported on it's own at a shapefile. I was able to complete the hexagonal grid on a shapefile that was just the boundary of my region of interest, but it's coordinate system was undefined and so it wasn't layered over my boundary region. I also wasn't able to project it into the proper coordinate system. I'm using the Canada Albers Equal Area Conic coordinate system. I've had no problems using spatial statistics functions in Patch Analyst.
This is my first time using Patch Analyst so thanks for your help!