Within the previous EXTO PR, the dividend was based on what is mentioned below...
http://ih.advfn.com/p.php?pid=nmona&article=48046528 ...Completion of the spin-off is subject to final approval by EXTO's board of directors, confirmation of the tax-free nature of the transaction, as well as effectiveness of an S-1 registration statement filed with the Securities and Exchange Commission and FINRA approval. ...
Also, there have been plenty of dividends that have been cancelled before. I Googled a bunch of them to familiarize myself to see the flavor of those situations. I think we are fine because the S-1 never was not completed which is where the creation of the shares to distribute would of had to have come from. The completion of an S-1 takes months to complete/mature even after submission. If the S-1 would have been fully completed to where newly originated shares would have been created, then I think they would not have been able to cancel it. It was still very premature which allowed for such to be cancelled in my opinion.