When I have seen this error before it has related to a problem with self-referential PML objects. Check the PMLLIB path and verify that any extra PML files you have added are correct
I got the same error message. But in my case it happens when I try to generate a Isometric System in Design. I really don't know how to figure out it. I also deleted the pml.index file, try again and still nothing.
Can you run the iso's in standard mode (one by one not as a system)? Do the iso's run at all in Isodraft? Is the basicsys.met the standard aveva one and not one that has been adapted for the project?
Yes I can. When I use any options file in standard mode, it works. But when I use the Isometric System/Trim Form and choose basicsys.met (Yes It's the standard aveva one) the error comes.