I had some problems starting the software on NTSC A1200.
I found out that I need to boot into PAL mode and then select PAL screenmode from WB PREFS to get it working (before starting the SW).
Hmm, strange, worth a check, but possible. We live in Europe and have PAL Amigas.
Please, I said this before:
DON'T START IT FROM WORKBENCH. You're not supposed to. Who knows what patches/tweaks/whatever you have that might or might not conflict with the software. If you are setting screenmodes with Prefs, you booted Workbench and, therefore, are doing it wrong.
Everybody running clean into PT-1210 is not having any problems.
Also, you need to have some MOD files in the same DIR as the executable.
Yes, it is in the readme, that you need to have modules otherwise the software won't start.
But actually,
if PT-1210 is in the path (like, in C: ) and your
current directory has mod files, you invoke it and it will run reading those mod files.
You reminded me that the ADF version comes with no README in the archive (it has the readme in the ADF though, quit PT1210 and it will be displayed), so I updated the archive with it and it's available on the website.