Hi,
>" I've done all of it "
As Test: Start your program in /safemode {BTW: What is you program? Start command ABOUT to see Produktname and Productversion }
https://help.autodesk.com/view/ACD/2022/ENU/?guid=GUID-8E54B6EC-5B52-4F62-B7FC-0D4E1EDF093A
It works now, correct? If yes, we going further searching after a restart NOT in safemode.
(findfile "acaddoc.lsp") done
(findfile "acad.lsp")
(findfile "acad20xxdoc.lsp") xx = you have to edit the xx to your correct productname
(findfile "acadxx.lsp") xx = you have to edit the xx to your correct productname
Start new file, check PDSIZE, 0.4 again? Okay.
Start APPLOAD and share the list of loaded applications in screenshots.
In newer versions you can stretch the APPLOAD dialog to show whole filenames, pathes
and a long list for less screenshots.
And in CUI command you can see the name of your main cuix (is it acad.cuix?)
perhaps an enterprise cuix and a lot of partial cuix.
Run (findfile "<cuixname>.lsp") foreach cuixnames and check the content, if AutoCAD answer isn't "nil".