ID:150021 Can't update Block Design File because Block Symbol File for block(s) cannot be found -- save current BDF before updating

CAUSE: You attempted to update one or more blocks in a Block Symbol File (.bsf) for the block(s) in the project directory or the libraries you defined for the current project. Therefore, the Quartus Prime software cannot update the block.

ACTION: Click OK to close the message dialog box, and then make sure the BSF(s) for the block(s) are located in the project directory. If you do not have a project open, save the BDF and make sure the BSF(s) for the block(s) are located in the same directory as the BDF.