Sounds like they may be some other issue at work here.

If you can duplicate the exception with a small sample project, I would really like to take a look at it and just make sure that this will be fixed. I realize that may be difficult, since we probably can't access your data source. But I've tried testing this myself and I can't get it to happen.

Now i resetted the the column tags before saving the layout and the exception still occurs when i switch the volume from 9.2 to 10.1...

I define all the IG Columns in my code and enrich them with my meta-info tag...

after that, i apply the saved grid layout from xml so that the user gets the grid back as he has left it.

so all the types must have been loaded when applying the grid layout from xml.

Nolde said:

1) the assembly is definitely loaded

Are you sure? How do you know?

When I say "loaded", I mean loaded into memory, not just referenced by the project. An assembly won't typically be loaded until some code in the project tries to reference something in it.

If the assembly is, in fact, loaded into memory at the time you are calling LoadFromXML, then something else might be going on there and this might not be the same bug.

1) the assembly is definitely loaded

2) sounds plausible, i will try it..