ID:176278 Can't pack register node "<name>" into I/O pin "<name>". The node "<name>" cannot simultaneously use synchronous and asynchronous presets.

CAUSE: In order to pack the register node into the I/O pin, the register node requires both its synchronous and asynchronous preset. However, a register node packed with an I/O pin can use either its synchronous or its asynchronous preset, but not both.

ACTION: In the Assignment Editor, remove the Fast Input Register, Fast Output Register or Fast Output Enable register assignment applied to the node or I/O pin.