ID:265055 Trigger flow control description error in Signal Tap instance <name> line <number>: No start_store action is specified in the state-based start and stop storage qualifier mode. No sample will be saved.

CAUSE: You specified your own trigger flow control description. The description contains an error such that the compilation will fail or acquisition will not start.

ACTION: Add start_store and start_stop actions properly, or change the storage qualifier to a different mode.