I just went into the OR calendar and it is showing up.
Claudia, we did find a low-level caching error that was erroneously created by the previous release. We have both successfully reproduced the bug on our end and fixed it. A release will be going out tomorrow (Sun) evening or Monday morning. Only about 10% of our customers would be seeing this based on their account age - you are one of them. Thanks for letting us know. We started getting a flood of support requests about this over the past 2 days so we knew something was going on. ~Sam