Yes, this bug is very annoying and it is fixed in the next release (we still have a bug, that’s why this is not released yet). However, if you fast-rewind your score (by pressing ‘f’ two or three times), your score may work again (it’s a very poor solution I know, but this is the only solution before the next release).
But be aware that free cursors are allowed (cursors without curves). This cursors can be controlled in OSC for example by an other software. We’ll post an example in a few days that shows this feature 🙂