I'm not sure what the issue is here, I'll look into it. Is your graphics driver up to date as well?
I tried opening it again and got the same error. I took a screenshot; Stimuwrite then freezes after closing the window from AMD.
I'm starting to wonder if this is an issue with me and not an issue with this app. I've always used the galaxy background on this app, which is animated, so next time I get it to open I'll try to see if changing the background will stop this error from occurring.