It seems that the hslider2 and vslider2 are a bit buggy. As a result it’s messing up Iain’s DelayGrain2 example. I’m currrently looking into a fix. I think I am as well off to completely rewrite these widgets. I was pushing the JUCE library where it never wanted to go with these implementations!
[edit] Use hrange or vrange instead of hslider2 and vslider2