Awaiting a reply on this thank you.
I have done some research online and can see this as a reply.
Outlook stores all the messages you've received in a single file. You'll see
the "end of file" message if this file becomes corrupt or reaches a size of 2
gigabytes, which is the largest a mail file can reach.
Try holding down the Option key when you launch Outlook; this forces it to
rebuild the mail file. If that doesn't work, you'll have to delete the file and
start over; you will (of course) lose any saved mail messages.
I can also see this as well.
1. Exit all applications.
2. Hold down the Option key on the keyboard, and then click the Outlook icon in the dock. The Microsoft Database Utility will open.
Note: You can also access the Microsoft Database Utility by opening the Application folder and then the Microsoft Office 2011 folder. Open the Office folder, and then double-click Microsoft Database Utility.app.
3. Click the plus [+] sign to add a new identity, and then type a name for the new identity. For example, type, “New Identity”.
4. Set the newly create identity as the default. To do this, select the newly created identity, click the Action button, and then select Set as Default.
5. Exit the Microsoft Database Utility, and then restart Outlook, create the rule and see whether the problem is resolved. If this works with the new identity, export the old data as .OLM file and import it into the new Identity.