Yes.
4.6.9 and the Acme 1.1.5 if the slider is on, I have that error message, and if I turn it off the message gone. Even I tried to install it fresh, and I got same error.
Last version still has the same error
[[Template core/front/_yt__acme/yt__acme_slider_header is throwing an error. This theme may be out of date. Run the support tool in the AdminCP to restore the default theme.]]