I suppose this means that you don't have the original source?

One problem I would expect is that the different compilers would have different calling conventions for functions: input parameters and return values, not to mention things like stack usage. So even if you could link the old objects with your new ones, it would fail at runtime.

If your new compiler is also made by Avocet, this might not be the case. You might contact Avocet's tech support and see what they say. It can't hurt.

Dennis