'Specified cast is not valid’ in Microsoft Project Online & Microsoft Project Server

Hello,

We were receiving the error below.  The issue was related to issues due to a corrupt page cached in the browser or a proxy server.  We cleared the browser’s temporary internet files and problem solved.

In addition, we have also noticed this being due to text in date fields (Start/Finish Baseline Start/Baseline/Finish) in manually scheduled tasks.

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• Reporting message processor failed:
  • ReportingProjectChangeMessageFailed (24006) - Specified cast is not valid.. Details: id='24006'
    name='ReportingProjectChangeMessageFailed'
    uid='7d1df14e-4e15-e711-80cf-00155da02e35'
    QueueMessageBody='Project UID='751c625c-f627-e611-9803-0023244ac639'. PublishType='ProjectPublish''
    Error='Specified cast is not valid.'
    .
  • ReportingProjectChangeMessageFailed (24006) - Specified cast is not valid.. Details: id='24006'
    name='ReportingProjectChangeMessageFailed'
    uid='3124f14e-4e15-e711-80cf-00155da02e35'
    QueueMessageBody='Project UID='751c625c-f627-e611-9803-0023244ac639'. PublishType='ProjectPublish''
    Error='Specified cast is not valid.'
    .
  • ReportingProjectChangeMessageFailed (24006) - Specified cast is not valid.. Details: id='24006'
    name='ReportingProjectChangeMessageFailed'
    uid='7159e954-4e15-e711-80cf-00155da02e35'
    QueueMessageBody='Project UID='751c625c-f627-e611-9803-0023244ac639'. PublishType='ProjectPublish''
    Error='Specified cast is not valid.'
    .
  • ReportingProjectChangeMessageFailed (24006) - Specified cast is not valid.. Details: id='24006'
    name='ReportingProjectChangeMessageFailed'
    uid='2560e954-4e15-e711-80cf-00155da02e35'
    QueueMessageBody='Project UID='751c625c-f627-e611-9803-0023244ac639'. PublishType='ProjectPublish''
    Error='Specified cast is not valid.'
    .
  • ReportingProjectChangeMessageFailed (24006) - Specified cast is not valid.. Details: id='24006'
    name='ReportingProjectChangeMessageFailed'
    uid='d966e954-4e15-e711-80cf-00155da02e35'
    QueueMessageBody='Project UID='751c625c-f627-e611-9803-0023244ac639'. PublishType='ProjectPublish''
    Error='Specified cast is not valid.'
    .
  • ReportingProjectChangeMessageFailed (24006) - Specified cast is not valid.. Details: id='24006'
    name='ReportingProjectChangeMessageFailed'
    uid='2c361d5b-4e15-e711-80cf-00155da02e35'
    QueueMessageBody='Project UID='751c625c-f627-e611-9803-0023244ac639'. PublishType='ProjectPublish''
    Error='Specified cast is not valid.'
    .
• Queue:
  • GeneralQueueJobFailed (26000) - ReportingProjectPublish.ReportProjectPublishMessageEx. Details: id='26000'
    name='GeneralQueueJobFailed'
    uid='2d361d5b-4e15-e711-80cf-00155da02e35'
    JobUID='366f6dbb-4b15-e711-80d0-00155d50cd24'
    ComputerName='aa291b80-2501-4f18-853a-fabde1ea057c'
    GroupType='ReportingProjectPublish'
    MessageType='ReportProjectPublishMessageEx'
    MessageId='1'
    Stage=''
    CorrelationUID='d718e39d-9012-3000-da9c-388579a71aee'
    For more details, check the ULS logs on machine aa291b80-2501-4f18-853a-fabde1ea057c for entries with JobUID 366f6dbb-4b15-e711-80d0-00155d50cd24.