This is what the help says, regarding the related log messages ...
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CAUSE: You added the specified SRAM Object File (.sof) to a JTAG or Passive Serial Chain, or directed the Quartus II software to create programming files by converting the specified SOF. The SOF contains one or more megafunctions that support the OpenCore Plus feature. Megafunctions that support the OpenCore Plus feature are used for hardware evaluation only.
ACTION:
you can program an altera device only with a download cable through the quartus ii programmer. The design will stop working after the hardware evaluation time expires. See the messages window for evaluation time details. See megafunction documentation for the behavior of the megafunction when the evaluation time expires. You may also refer to the OpenCore Plus Hardware Evaluation of MegaCore Functions application note, which is available at the Altera web site, for general information.
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For the record, I am using a DE0, with its built-in USB-Blaster. Surely that qualifies the statement above,
"you can program an altera device only with a download cable through the quartus ii programmer."?
But the programmer function/window itself is not even allowed to get as far as looking for a USB-Blaster, let alone something on the other side of same. It gets rudely shut down before it even gets a chance. (See the screen shot in a previous post by myself, in this thread.)
*sigh*