As said in reply to the duplicate post, I am not certain whether you try to troll, but as you post your question, without additonal information, it is not possible to answer and help.
openLCA can crash in a calculation if the system you attempt to calculate is incorrectly specified, which can happen if you modify a database using scripts e.g. (that in turn are not well and correctly written then) or you use a database such as the EF database that is not meant for creating product systems via autocompletion, and do create a product system via autocompletion. The validation in openLCA can help you find issues in the database, caused by using scripts. Hth.
