Glad you have got it working again Mike.
Sounds like you might have a problem with an actual Plotmaker file rather than Plotmaker itself although it may have just been a memory issue.
I have never used 4.55 - I started with 6.5
Version 10 where Plotmaker was amalgamated into Archicad itself (rather than a separate program) was I think one of the best things that has ever happened to Archicad.
I couldn't imagine trying to go back to an older version now but if it is still working for you then that is good to hear.
Barry.
One of the forum moderators.
Versions 6.5 to 27
i7-10700 @ 2.9Ghz, 32GB ram, GeForce RTX 2060 (6GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11