Old DirectX9 app started to crash after switching to Windows 10

I am having one old app crashing after switching to Windows 10. The following crash event is in log:

App: Ez3D2009.exe, version: 1.2.6.20, time: 0x56c6a435
Module: d3dx9d_36.dll, version: 9.19.949.2111, time: 0x470d872b
Exception: 0xc0000005
Offset: 0x002ac3b7
App path: C:\Ez3D2009\Ez3D2009.exe
Module path: C:\Ez3D2009\d3dx9d_36.dll

followed by

App: PicassoViewer.exe, version: 3.2.0.6, time: 0x5d57ff7d
Module: KERNELBASE.dll, version: 10.0.19041.572, time: 0x979ddb1d
Exception: 0x0eedfade
Offset: 0x00129ab2
App path: ...\PicassoViewer.exe
Module path: C:\Windows\System32\KERNELBASE.dll

I suspected this is D3D problem and replaced DLL from the app C:\Ez3D2009\d3dx9d_36.dll with one from C:\Windows\SysWOW64. I took d3dx9_36.dll and renamed it to d3dx9d_36.dll.

Is this correct reasoning? What else can be done?

App is crashing from time to time unpredictable.