OK, so I was trying to do something slightly odd ...
I tried to split a string using an empty delimiter. I was hoping to get a quick way of splitting the string into an array of characters rather than having to do it laboriously using repeated calls to SubString (which seems to be the only other option). Instead, this just hangs in the Split() call. I'm happy that it doesn't split the string as I want it (although it would be a useful feature to have, please :-) but I don't think it should hang!
Program Test
Method Main()
Define s As String[] = Split("abcd", "")
print(ArrayLength(s))
End Method
End Program