In your stair settings (riser section) you will need to assign a building material for the risers.
This is a problem with the stair and railing library parts if you are not using a standard Graphisoft template.
All building materials, line types, pens, fills (i.e. all attributes) as set by default in the object scripts may not match those that you have in your job/template.
There are only 2 ways to fix this.
One is to edit all of the object scripts and reset all of the parameter defaults.
You will need to do this every time an new library (or update) is released.
The other is to set up a bunch of favourites with all the settings changed as you want them.
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The riser issue is straight forward - the assigned material is missing from the library.
The pen allocation is more interesting and I noticed it in a recent object I created. Unless trapped in the GDL parameter script, it is possible to use the background pens with values 0 and -1, (window background & transparent) as a foreground fill pen which causes the error you refer to in the window. Check your pens for the window to make sure you have assigned a pen other than the background pens for any foreground fill pen.
Apple iMac macOS Monterey / AC25UKI (most recent builds)
Unless trapped in the GDL parameter script, it is possible to use the background pens with values 0 and -1, (window background & transparent) as a foreground fill pen which causes the error you refer to in the window.
To "trap" this you can use this code in the parameter script:
IF mypen < 1 THEN mypen = 1
PARAMETERS mypen = mypen
AC 24 [ger] | Win 10 | Developer of the GDL plugin for Sublime Text | «Furthermore, I consider that Carth... yearly releases must be destroyed»
thanks for the responses. I guess my question is: why does archicad give me these error messages at all? I don't care about pen numbers or missing materials that don't affect my work, but my 3D views are constantly crashing and giving me these long reports that just slow me down.
I just got new message today in yet a different project .pln (attached here). Seems like this is happening more often than before and reflects a software flaw.....
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