[Rejuvenation v13 | Vague Clarity (Patch 13.0.5 is out!)]

Hi. I downloaded the new version 5.0.1 Mega download and I've extracted it. Now every time I open it up, the screen flickers a few times as soon as it loads up within Gearen Laboratory and then it stops flickering. Is this a normal occurrence? I will not delete my previous versions of v13 if not. Those previous versions are v13.0.2 and v13. Please advise. :( Should I attempt a re-extract of it?.

[Rejuvenation v13 | Vague Clarity (Patch 13.0.5 is out!)]

I have previous v13 versions of Pokemon Rejuvenation and want to download this v13.0.5 update. Once I do so, should I still keep those previous versions once I get the new version or delete them once I have the new version downloaded? I don't want to break my game/s.