Hi, There is a DNU on the class TempVariableNode with the message #returns when the patch 12202-Pha-VariousEnhancements is applied. You can reproduce this bug when you apply the update without the source file. I suppose this is an error from the decompiler : (MCMergeBrowser >> #conflictSelectionDo:) decompile I've added it in a bug report #458. Cheers, Gwenael