Hi Maija,
Thx for the file,
i just looked at it and the problem comes from your first filter track, apparently from the first pencil filter.
So there is few bugs here we must correct: AS does not seem to aggregate correctly the different filters.
The first Pencil Stroke (see first top track) start from approx. 0.031 secs and finish at 0.148.
Try to extend it a little using the mouse (ex: try to make its end time at 0.150s or more) and relaunch the SVP play : it -should- not trigger the error anymore.
There is also a bug when you want to modify the pencil filters start/end/duration directly from the inspector.
That means we have 2 bugs to correct here 
Until we have a proper correction, if this kind of problem appear :
- try to find which filter is causing it (mute / demute each track separately)
- you can create a new track and move the pencil filter across the tracks using the MAJ button so it will keep the correct start/end time each time you drag the filter
- When you see which filter(s) is the cause, then try to move the start / end time a little and restart your process.
I’ll try to correct this problem as fast as possible.
Best wishes too,
HTH
Charles