Thanks for using Aspose.Cells for Reporting Services.
We have fixed the similar issue in the recent version. Let us know your Reporting Services version. The fix given below is for SSRS 2008R2. If you are using some other version like SSRS 2008 or SSRS 2012 then let us know.
Good morning. We copied the DLL to the folder as indicated above. We do have SSRS 2008R2. I have attached the error message when exporting a report to excel via aspose after the new DLL was replaced and the services restarted. I have also attached a snapshot of the DLL properties to make sure we are using the correct one.
Here is the RDL file. I don't believe we've had an issue with this previously, but I know we are able to use the normal excel export, so we may not have come across this issue before.
Thanks for your file and using Aspose.Cells for Reporting Services.
We have logged this issue in our database for investigation. We will look into it and fix this issue. Once, the issue is resolved or we have some other update for you, we will let you know asap.
This issue has been logged as
SSRS-40202 - Export to Excel Error - same worksheet name already exists