External Exception C000001D, Why ?

Using Delphi C/S 3.00

I found this error when trying to run my application on a Vectra 386/20 with
Win'95, 16MB (Yes, I know, that is a very old machine but it's working).
I this same computer is running Excel 4.0, Word 2.0, an others application
without problems, even applications compiled with Delphi 1.0 are running

But, my applications compiled with Delphi 3.0, don't works.

If I compiled a simple form with a panel and a couple of buttons, it runs in
the old machine, but when I have a more complicated form, don't works.

Any help would be apreciate.