Scheduled Reports to MS Sharepoint are failing randomly

Hi All,

We have a set of scheduled WebI reports that are being sent to the Sharepoint folder.

But most of the reports randomly fail with the following error:

source file error. [Invalid argument]: [CrystalEnterprise.DiskUnmanaged]

We have also searched through most of the related threads in SCN and did not come across any solution that helped in our scenario.

Any help/pointers will be greatly appreciated.

Thanks,

Jasmine.