GDIPlus calls crash on a PC

Well some points here...
1st if the version is slighty older then this can be the issue....even a minor deviation could break "hell" (i have encountered some really nasty crashes with similar cases). Make absolutely certain that your versions match 100% ...you need the exact version.
Also take note about the bitness of this .dll ...it could be 32bit or 64bit ...99% your application is 32bit your application is 32bit so you have to open a cmd prompt with admin rights...go to C:\Windows\SYSWOW64 folder...
regsvr32 /u gdiplus.dll
to unregister the current instance
rename it
copy the correct version to SYSWOW64 folder
register it
regsvr32  gdiplus.dll
(Crucial part...there are 2 versions of regsvr32 ...one for 64bit .dlls located in C:\Windows\System32 and one for 32 bit .dlls located in C:\Windows\SYSWOW64 use the one that matches your .dll bitness or else it will fail) 

OK, this is helpful information -- will try some things when I get into work.  It happens that this application is 64-bit, but all my previous work has been 32-bit, so I am not 'tuned up' to thinking about the bitness.  So, perhaps being careful about that will yield something.  Thank you.  One question: if I want to place the matching version of gdiplus.dll then must I also worry about sub-dlls that it may use -- like gdi.dll -- so pehaps I have to place a whole set of dlls of the proper version numbers -- and how to I discover what they all are?  DLL hell, I guess.

I am not sure if i can help you on that...my initial move would be to replace the gdiplus.dll and see if it works.
If not there is a tool called Dependency Walker that is supposed to do exactly this

Just another dumb question (while I wait for permission to fiddle the server) -- is GdiPlus.dll an OCX ?   I guess it must be, or I wouldn't have to do the regsvr32 thing, right?   I had thought it was a plain dll.

Maybe I should go another way on this.  I don't seem to have permissions to regsvr2 dlls on the target machine -- so maybe I should build a version of my app with the older version of GdiPlus.  But how to do this?

Here is a restatement of my problem....

My app uses gdiplus.dll and is built with Windows SDK 10.0.18362.0 corresponding to Windows 10 version 1903. Works fine on that OS version.

When I try to run it on Windows 10 version 1809 it crashes on calls to gdiplus.

Without having a windows 10 version 1809 computer here, can I build it with the older gdiplus so that it will run on OS 1809? And if the answer is Yes, it would seem that I need to get the older gdiplus.lib and *.h -- but those don't see to be available...?

Thank you!