"Invalid operation. Beat selection is not available.".

HI there! Yesterday I got the new version of Rekordbox. Everything was going nice until I press the SNAP option in the reverb FX and then the range of the FX disappear in the controller. I looked for going back to reset but unfortunately I haven't found the way. 

Even though I checked the two post in the forum, there aren't concrete answers.

Some ideas to fix it? thanks.