You may want to validate:
1. Is this a particular user specific issue or a global issue for the users' community ?
2. Check if the user in question has proper access to the FR reports?
OK, I read, All the users are ldap users and all belong to same shared services groups ---- can you check if this particular group has proper access to FR component?
I am having the same issue. Everything seems normal until the dimensions are chosen and then you click on the OK button. The error only occurs on a single users computer, no matter who is logging in there. And all of these users can log into FR just fine from their own computers. So it is likely a something on that computer. This is the first any of us have seen this error.
OK, in this case of one single computer, please make sure that settings as per below KB document as in place and then validate the issue:
Internet Explorer (IE7, IE8, IE9 and IE10) Recommended Settings for Oracle Hyperion Products (Doc ID 820892.1)
The information in this document applies to the following Enterprise Performance Management products:
Data Relationship Management (DRM)
Enterprise Performance Management Architect (EPMA)
Essbase Administration Services (EAS)
Financial Data Quality Management (FDM)
Financial Management (HFM)