Message reconstruction is not working on a secondary mailbox even though it is fine on a primary mailbox. Permissions have been confirmed and Outlook form looks ok.
This is an issue with security in outlook blocking scripts running in shared folders.
Change outlook setting to allow scripts in shared folders. To change in Outlook 2010
In Outlook 2007
1. On the Tools menu click Options.
2. Click Trust Center.
3. In the Trust Center dialog box, click Email security
4. Under Script in Folders, select the Allow script in Shared Folders check box.
5. Click OK to close the Trust Center dialog box, and then click OK to close the Outlook Options dialog box.