I have an entity with several associations. Creating an object works great and when I want to edit via edit button in a grid (overview) I can change the attributes and associations. If I then redeploy the project in mendix (does not matter whether with changes or not) and then try to edit all the reference selectors are empty!!
This is the error that firebug returns:
mendix.core.MxProcessor.get : Error in handler for  : this.metaData is undefined ([object Object])