Just to clarify the latest version is now 2019.1.5 which was released for download yesterday.
Great example of why it's always better to explicitly state what you have, not use labels like "latest version" (too often, the person's notion of "latest"
isn't the actual "latest") -- I encountered customers who a couple weeks ago still believed 2019.1.3 was the "latest version". It might seem like saying "latest version" is a precise, absolute description, but it really isn't. If someone comes upon the thread a week from now, and sees "latest version", they'll think 2019.1.5, not the 2019.1.4 the OP meant.
"Latest version" is a subjective, not objective label. Typing the actual version takes fewer characters, and is a LOT more reliable. :devil:
As for the OP's issue: As you're seeing a bunch of crashes, are the crashes from Lightwave? Can you post an example crashdump from one of your crashes? How exactly does the crash manifest? Does LW just drop silently to desktop without ever showing bug/crash warning dialog? Or are you referring to OS crashes (BSoD's)? If BSoD's then the problem likely isn't LW, but instead some kind of driver issue (likely gfx driver issue). What's the BSoD error code/message provided (if BSoD)?