Do you mean you see this when using the C2 editor debug run mode?
Yes. This error started to pop out when I updated to r217 (but in r219 it still exist). Before the update (latest working version was r216) debug mode was working fine.
Do you see any errors in the browser console when previewing normally?
I normally test on NW with no errors.
But specially for this issue I launched project on Chrome and there were indeed errors that in NW doesn't occur. Those errors were connected to MouseLock plugin that I'm using. But when I removed this plugin from the project there was only those errors in Chrome console:
but the NW debug mode still gives me the same error.
What browsers are you testing on?
On NW.js so I suppose it's on Chrome engine.
Do you use any non-standard plugins?
MouseLock v0.5 ()
What version of C2 are you using?
It's OK for r216
Error occurs in r217
What version of NW.js are you using?