I have been working on some heavy shape files which includes Alberta's road, river, power gas,substations, land cover, slope, urban areas etc data where I am trying to perform the weighted overlay analysis in model builder using total of 7 files mentioned here, ArcGIS is getting crashed within seconds. I have check all the input files everything seems OK to me. Since yesterday, ArcGIS has crashed almost 25 times. When I use less number of files, say 5 instead of 7, weighted overlay is working fine.
My system specs are 8GB RAM, i5-4590, 3.3GHz, 64-bit. I don't understand the reason for this issue.