I am sure I did the patch - there is no option showing anywhere to do it.
I loaded my previous save again, clicked the "Patch your save file!". It seemed to do it okay and clicked continue.
If I then go back to the basement I still get the same thing - only a back button and told need to hire a construction team.
Unpatched save attached.
Oh dang. I see it now. Just as I was afraid. It looks like the save is from version 0.4, means you've skipped 0.45. Basically the thing is in-game patching only works if you upload a save file strictly from a previous version, not earlier. Sheesh, thanks to you I just realized this as a problem and already figured out how to fix it. Thank you so much, that's literally why I ask my players to communicate and give feedback!
As for you, I've made a
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Use this .html, overwriting the existing one. This will simply combine changes from both 0.45 and 0.50, so now if you click "patch your savefile!", it'd work. Also, there's a little
something added as a new starting screen, consider this as a little peek at the next version.