That is certainly frustrating considering the workbook has functioned just fine in the past.
This issue appears related to some calculation complexity limitations when using hyper extracts. Our Engineers plan to revise and increase the threshold for "maximum allowed number of nodes" in an upcoming maintenance release. In the meantime, please see the below KB article for updates and possible workaround options:
If you have further questions specific to this issue or need additional assistance, please submit a support case.