Program closes when I change speed

What is your operating system?
Windows 10

What is your Shotcut version (see Help > About Shotcut)? Is it 32-bit?
20.07.11

Can you repeat the problem? If so, what are the steps?
(Please be specific and use the names as seen in Shotcut, preferably English. Include a screenshot or screen recording if you can. Also, you can attach logs from either View > Application Log or right-click a job and choose View Log.)
I’m editing a long video, currently have 2 video tracks, and 1 audio track, copy a clip, move clips around, Ctrl+v, click properties, lower speed, click play button, shotcut shows clip has been slowed (it is longer in track), then program closes.

There was a fix in newer version 20.09.03 on speed changes:
https://shotcut.org/blog/new-release-200913/

  • Fixed a crash changing speed of a clip with non-standard non-integer or variable frame rate.

There is also a fix for the next version 20.11 when you change speed a large amount with Pitch Compensation enabled such that it uses too much memory.

So how do I update Shotcut

https://shotcut.org/download/

but I already downloaded it, can I just update without reinstalling?