FB905 Unable to Copy to PLC...

Onsite, I inserted a new 128K memory card into a 6ES7 315-2AG10-0AB0.

Downloaded project to the customer's PLC the FB905 does not copy.

"Unable to copy the block EL2203211\SIMATIC 300 Station\ CPU 315-2 DP\S7 Program(1)\Blocks\FB905. Do You want yo continue the copy procedure?

Clicked yes.

FB905 is missing in the online view.

Tried a drag and drop from offline to online - nope.

Tried downloading the hardware (CM module was added yesterday when power was off).

Then dragging and dropping still failed. 

List of messages:

• [D21A] Incorrect local data length or Write-protection code faulty.
• Unable to copy the block FB905.

Clicking on the message description from the list of messages dialog:

• Help on Message 33:53786
• Description:
• Incorrect data length in block header or local data stack not sufficient.
• Remedy:
• Note the restrictions of the CPU being used.

Checked the CM manual the CPU 6ES7 315-2AG10-0AB0 is listed.

Not sure what to do or what the remedy is. I did all development on a 6ES7 315-2AH10-0AB0.