Hello to everyone ,I am a relatively new user of HEC-GeoRAS 10.1 and HEC-RAS 5.03. I hope you can help me with the following problem. I want to make flood inundation mapping with Hec-GeoRAS. But, while I move to step “import RAS Data”, there is an error “failed to read ras data object reference not set to an instance of an object”. I have no idea to solve this problem. Please everyone, Any suggestions regarding this problem are highly appreciated. Sorry if my english isn’t good enough. Thanks.