rkward, installing issues

[someone]

Hi 
I uninstalled the previous version of rkward, and then ....
I just downloaded the nightly build from here
https://binary-factory.kde.org/view/Windows%2064-bit/job/RKWard_Nightly_win64/

i installed it, it said it had to install a component, and asked me to select a mirror. This time i chose ohio (the state with "Hi!" between two oh's).
Looked okay, but when that was done, i got two pop up boxes

One says "crash recover file detected. It looks like rward has crashed, recently. We are sorry about that. However, not everything is lost." then some stuff about recovery files, do i want them? (no I don't).
Another box was "The legacy output file has been imported. If satisfied with the result you can now save it in the new format. To remove the old output file, run rk.import.legacy.output(import=false, delete=true)
I guess this is because the last version crashed. Do i need to do anything? I don't need to save anything from my previous sessions? Can i just click "delete" from the crash recovery file detected box, and "okay" from the legacy output file popup?

Thanks
Gene
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