RuntimeCmd: Error: Table has no action _drop()

[raghu-d32]

Hi,
We are experimenting with P4app and P4 programming. Even though the default action is set to _drop(), the packets won't be dropped and we get this in the console:

RuntimeCmd: Error: Table send_frame has no action _drop
RuntimeCmd: Error: Table forward has no action _drop
RuntimeCmd: Error: Table ipv4_lpm has no action _drop

Please let us know the right way to use _drop() and make it the default action.
We are trying this in multiswitch.p4app.

Also, can someone please let us know where to find these CLI table_add, table_set, etc. commands in files (if they are stored somewhere) and change the required actions accordingly:

Thanks in advance.