Crushing if some parameters driven by xpresso (RC5, C4D r18)

Description:
I have 2 lights in scene with multiplier parameter driven by xpresso.
I need swith on-off lights one by one in certain time.

In my construction it’s works like so:

Time node with frame
sin from frame
range mapper for kicking off minus sign
little script which give 50 on multiplier corona light.

More simple drive ON-OFF parameter by xpresso, but on-off doesn’t work in Corona Light.

So, when I start render sequence - render going well until multiplier parameter doesn’t change from script. But in 7 frame, when script changing value - cinema just crush.
I guess some other Cinema logic or scripting (when use mograph for example) crash when using Corona, many times I saw it.

I attached scene, just press render button and wait 7 frame (5 second per frame), when multiplier value in Corona Light is changing.

ExpressoDrivenTest.c4d (1.25 MB)

I just tried this now and there is no crash. Can you confirm that this has been fixed? Thank you.