Under the Advanced tab, MESSUI allows to select an effect file (such as scanlines, aperture etc.). These are normally located in the "artwork" folder. Whatever you choose there is not saved, the effect is never applied. Checking older versions of MESS with UI, I found there is an "effect" line in the ini under "Windows Video Options". This line is missing by default now it seems. 2) Indeed! I moved the cpc_flop.xml out of hash, and presto, cpc almost instantly usable. Thanks. I actually don't know what you mean by setting the ini files up - in my experience everything was set up automatically. I found now while comparing with version 0149u1, that for some reason my rompaths aren't updated anymore in inis with whatever I specified via gui. Writing the path in mess.ini manually makes it work. This had the curious effect that after an audit, MESSUI told me that various systems I had started before were now available, but they still would not work, because the system-specific ini was still pointing to the old path. After deletion of those inis, those systems naturally work as well.