Missing ruleset

[KillerRabbit]

Hello

I have been idle for a month, today i came back, i upgraded to ultimate and added the alien archive 2 for starfinder to my collection.
It is upgraded to ultimate as you can see here:
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When i tried to load my starfinder campaign, i get this message (offcourse if upgraded before attempting):

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After clicking no, this popped up

Edit
Ruleset Error: desktop: Could not find hot key title font ()
Ruleset Error: desktop: Could not find hot key label font ()
Ruleset Error: mouse: Could not find drag font (draglabel)
Ruleset Error: desktop: Could not find tooltip font ()
Ruleset Error: radial: Could not find hub icon (menuhub)
Ruleset Error: radial: Could not find back icon (menuback)
Ruleset Error: desktop: Could not find die modifier font (diemod)
Ruleset Error: desktop: Could not find die sum font (diemod)
Ruleset Error: desktop: Could not find die result font (dieresult)
Ruleset Error: desktop: Could not find poll empty icon ()
Ruleset Error: desktop: Could not find poll positive icon ()
Ruleset Error: imagecontrol: Could not find distance font (modcollectorlabel)
Runtime Notice: Returning to launcher

Edit 2
I have the same problem with each game and each ruleset

Any help ?

[KillerRabbit]

Managed to fix it by deleting the corerpg.pak

[Darqualan]

I'm having this issue right now, I deleted the corerpg.pak and that didn't resolve my issue

[Darqualan]

I resolved the issue by deleting my 5e ruleset and updating