probs using TfD source

I’ve got a cached TfD simulation (originally driven through TP via XParticles, but now cached, XP not active in scene) and when using the TfD source for Krakatoa am getting an endless “Preparing…” message that never resolves into “Rendering…”

Console shows the following:

“TFD [ 51.844] GLShader::release() no GL context”

Related: when rendering Krak to viewport, attempting to cancel the render (using c4d’s “a” redraw screen key, for instance) results in app freeze requiring manual shutdown/restart of c4d.

Anyone see anything similar or have any ideas?

EDIT: Am using Krak beta3 on R15, Windows 64 bit.

Be sure to follow the steps I described in the manual thread closely.

viewtopic.php?f=195&t=10990#p47770

It is important to actually cache the Density Field in TFD. (This is disabled at default)