Invalid bounding interval [, ]

[C]

I want to fill a ubyte array with random data.
The code compiles with no warnings or errors.

Source snippet:

        auto prng = Random(unpredictableSeed);
        ubyte[] chunk;

        chunk.length = 1024;

        fill(chunk, uniform!("[]")('\x00', '\xFF', prng));

Error (at runtime):

object.Exception at c:\dmd2\windows\bin\..\..\src\phobos\std\random.d(971):
std.random.uniform(): invalid bounding interval [ ,  ]
----------------
423C50
423AC7
404EA8
404EEC
404AE3
4A6109
----------------

Also I lost the URL for this forum, all I see is this nasty PHP News Reader
interface.
Thank you.