Roland, you might want to clean your project before deploying (in Project>Clean), that might do the same thing, We aren't aware of such problems so far, could you attach your project here for investigation ?
here is the ZIP with the project. There are several BPMNs, of which only "NewbileFAST" is of interest. The others are previous versions, partly done for testing, partly because the original versions raised compilation errors I was not able to solve (even by cleaning the project), so I just redrew them. The Designer displays errors, even for the NewbileFAST.bpmn, nevertheless the deployed version works very well.