awesome
but why would you feel stupid? one can't know everything

welcome to the forum :) - in ...\Steam\SteamApps\common\Skyrim run the skse_loader.exe as administrator. maybe that solves it already :/ in a thread over at the steam forums are some more suggestions: Right-click the folder > Properties Security tab > Advanced Click Change to the right of Owner Ente...

good to know it worked
(you should now be able to delete that line - the semi-colon made it "invisible" for the ini anyway )

but strange that deleting the files didn't work :/

wenn du das als Bug melden möchtest, schreib es vielleicht mal mit in den Tracker
(keine Anmeldung nötig)
wenn du fragst, wie du an der Stelle jetzt weiterkommst...
naja,
neuladen sollte helfen. oder hast du das getestet, und es tut sich nun gar nichts mehr

did you delete the skyrim.ini as stuemper suggested? Skyrim should have created a new one on launch. it's still the one Enderal uses, much longer and there are other Masterfiles listed. if deleting it doesn't work, open it and look for this paragraph [Archive] bInvalidateOlderFiles=1 sResourceArchiv...

welche Schlösser du öffnen kannst, hängt eigentlich nicht von deinen Fähigkeiten ab,
sondern von den gesetzten Erinnerungspunkten (es sei denn, das wurde kürzlich umgepatcht?).
die sind ...ganz rechts bei grün?

die Bücher machen dir das Knacken nur leichter.

hm.
the more you know.
thanks for letting us know, and good to hear it works now

found this here : You can switch off the message by replacing the following in: C:\program files(x86)Steam\steamapps\common\Skyrim\Data\SKSE\Plugins\crashfixplugin.ini (configuration settings) WarnSKSEMemoryPatch=1 to WarnSKSEMemoryPatch=0 or you can "solve" it by setting UseOSAllocators=0 to UseOS...

silly as it sounds, but did you try an earlier save?

and could you upload a manual savegame?
found in ..\Documents\My Games\Skyrim\Saves,
we'll need the skse and the ess, pack them to a rar or zip archive and attach them to a post here

well.
I don't know.
something went wrong with the installation. can't say much more than that.

also, did you take a look at the above linked thread?
if you followed the install - instructions (and reinstalled it by now?) and the issue persists,
then it might be the ini thing.