I can't say that it's happened to me, no. One bug I bump into quite frequently with DIM, though, is that one where the Daz Install Manager goes nuts when I launch it after I've manually placed few packages in the Downloads folder prior to opening the application. When I do that, chances are that DIM prompts me to install the Studio and its resources again for no reason. Another symptom I've noticed when this bug happens to me is that DIM also forgets which of my bought products I've already installed.
When that happens to me, I simply ignore what the manager is telling me, then I install those few manually placed packages and close the program after that. Next time I relaunch the DIM everything works fine again. It's crazy.