Help with hotfix please

Hello,

We are running Draftsight V1R2.1 on 32-bit Windows XP SP3.

When installing the hotfix, I receive "Error 5 running command hotfix.exe."

As suggested by some users in this forum, I tried replacing the current DDKERNEL.dll with the dll file from the x86V1R3SP0 hotfix directory as I couldn't find a directory corresponding to our version. I now get this error when launching Draftsight, "The procedure entry point ?module@OdEdCommand@@UBEPBVds_OdRxModule@@XZ could not be located in the dynamic link library TD_Root_3.05_9.dll." Possibly a dll version mismatch?

Is our version too old to apply the hotfix? What are my options to get this fixed before Wednesday, 3/1/2017?

Thank you for your help.