HtoA node "Houdini Driver" not installed

[phillips.a.adam]

I've been getting these errors node "houdini driver" is not installed for quite some time now. They just appear randomly and I have to restart my computer to make it go away and be able to render again.

I'm currently using HtoA 5.6.1.0 with houdini 18.5.532 but the problem has been there since I Jumped over to Arnold in December (I haven't had time to dig until now)

[Stephen.Blair]

Unfortunately this isn't something we've managed to figure out. It happens just sometimes on some machines, and it doesn't happen here on our machines.

What OS are you on?

[schwungsau]

typical windows problem, happen when i start IPR and interrupt it before first pixel drops or interrupting a batch rendering. houdini restart should fix it (or cleaning any hanging houdini session in memory)

[schwungsau]

i think, it also happens if multiple houdini sassion open.

[phillips.a.adam]

Thanks guys, yep its Windows. Really annoying and random. It doesn't even need a heavy object to make it break.... Sometimes i'll be running IPR for a long time and then can't get it started.