"I downloaded Autofluid Infinity v8.0 crack, but the 'Transient Analysis' button is greyed out." Reality: The crack was made from a "Viewer" version of the software, not the full solver. You were tricked.

A: For water hammer: HAMMER (Trial) or PyHammer . For gas: Cantera with Python scripting.

"My crack works but crashes when I open the 'Pump Library'." Reality: The crack damaged the registry keys needed to call the external pump database. Legitimate installation requires admin rights that the pirate installer bypassed incorrectly.