If you use settings to change the user theme, the option to change it back in settings sometimes disappear. Well, you can right click other places in the user interface to change the theme, but it should work in settings too.
Many default patches are not in tune, making it difficult to use with other instruments - especially if you are a new user who haven't learned controlling the synt yet, it can be difficult to re-tune those patches. Those patches should be in tune from the start. It gives a bad impression of a hurried product released to early - I use the synt in my setups less because of this.
I hope the fix the above issues soon, as it could become a good synt.
One special thing I notice about this synthesizer is that it often sounds a little distorted. Like something is overdriven somewhere in the signal chain inside SynthMaster One. And that is on many sounds not even using the distortion effect. It might be to make it sound special (big, wide, etc.), but now when I hear it I cant stop hearing it. I never overdrive my signal chain, so I know it is not due to that. Of cause it is about how the patches are made (and how they are passed on between the modules in the software), but I dont hear this distortion on other synths, so it should be checked out.
I must say though, there are also times when this synthesizer sounds fantastic. So to the price, it is surely worth it ;-)