i was working on a very large, complex filter the other day and got the attached popup. it was when i plugged in a checkbox to a component and then dragged a line from that component to another. i dont know if this one is already handled or not but i'm mentioning it just in case.
the filter was not saved previously with the adjustments i'd made so i dont have the exact filter with the bug, only a previous save without the bug.
this came up late in the day and i'd been running a lot of other software prior to this, so this may also just be a case of windows running out of resources to some extent. windows is pretty bad about returning resources and not fixing fragmented ram, so this may well just be a case of that.
i havent tried to re-create the steps taken to cause the bug yet, so i dont know if it's repeatable.
craig

If wishes were horses... there'd be a whole lot of horse crap to clean up!
Craig