The error will turn all pens to black (the top ones anyway), and also dumps random stuff onto one layer... ie the ArchiCAD layer. It also causes us to lose infomation in sections/elevations. hence quickviews stuffed, and you can imagine the chaos therein.
The aftermath in opening the file is that if you go into Pens/Colours to look at the pens (to change them), ArchiCAD immediately crashes.
It seemes Attributes have been corrupted. I've tried opening a new file and merging in the affected file, and get the same error coming up.
I'm not sure what causes it, or if others have ever had it.
I'm not confident the Hotfix will fix it, but i'll (hesitantly) install it... even though there has been some mixed responses on it.
any advice would be greatly appreciated it. I have made a copy of the file, as last time it occured we were under deadline pressure, and had to manually move things onto correct layers etc (hours of work), and the project file was never the same. (we had to use quickviews linked to older versions of the project). The project was a mess.
I am also getting this error on a plan I just saved. This is with ArchiCAD 9 in Windows XP.
I am currently in the process of upgrading my ArchiCAD APX addon from 7 to 9 and untill reading this I suspected this might be the cause.
Do you have a solution? Are you running any non standard addons?
As a workaround I've opened a different plan file that has pretty much all the same attributes and then after that when I open the problem plan (without closing ArhchiCAD) it still gets the error but the attributes from the previous plan are in place.