Getting details on Preview "PostScript Conversion Error"

I'm using Preview 2.1.0 on OS 10.3.9, and I write PostScript code by hand for technical documents.
When I write a program that is correct, the image shows up in Preview just fine. But if I make a mistake (which is often), all I get is the Preview message "PostScript Conversion Error", which doesn't tell me much.
Can I somehow get Preview to reveal the underlying PostScript error message, such as "stackunderflow", "rangecheck" or "undefined <name>"? This would same time.
- - Dave
flat panel iMac Mac OS X (10.3.9)

Thanks for responding promptly.
Actually, I'm not a professional. Rather, I do PostScript as a hobby because it is a fascinating computer language, and it allows the user to generate extremely precise graphics.
I suspect that well-endowed PostScript development environments are rare because nobody is really expected to write large PostScript programs -- rather, the user writes a large program in some other language (like C++), and has it generate lengthy, but simple, PostScript code. I've done that myself.
Still, since Preview can interpret PostScript, and seems to do it right, it'd be a shame if we can't get the text of an error message that the interpreter is presumably generating. My gut feeling is that there is a way.
- - Dave
flat panel iMac Mac OS X (10.3.9)

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