Magritte Validation Error

Hi I'm playing with the latest Magritte and generating some forms for a couple objects to test out how relationships between objects works, I'm running into some trouble. At first I thought it was something wrong with my code. descriptionProject ^(MASingleOptionDescription selector: #project label: 'Project' priority: 10) reference: MAClassDescription new; options: (MADynamicObject on: [ TMProject repository asArray]); beRequired; beSorted ; yourself but after writing a lenghy email explaining the issue, it struck me what it might be, so I popped into MADescription and commented out the code for validateKind: anObject. Turns out that fixed my issue. Validation was failing because the objects I had in a single option description were proxies coming from goods, and they fail validateKind:, has someone else run into this? Guess I'll just leave it commented out for now until there's a fix, or I figure out what I'm doing wrong.