Bugged System Fleet

I was removing a system fleet some careless commander had left in my path, and a trifling little force it was... only around 1.3 million fp.
But for some reason i could not do damage to those ships.
Tried several times.

Then i boarded them, which did work, but also generated a couple of error messages.
The report below is from that last attack. (names on my ships as been withheld for security resons)

Invader Argus (#4755)

Engaged Units
Fleet Name # of Units Attack Defence Hitpoints
ASN *** 1 2111146144976+ 0+ 2790606993510
ASN *** 1 1595205832623+ 0+ 1953318639565
ASN *** 1 1022403564747+ 0+ 1255477730452
ASN *** 1 675973728622+ 0+ 833424738843
ASN *** 1 446852795896+ 0+ 554288345649

Defender Commander Fleets (#)

Engaged Units
Fleet Name # of Units Attack Defence Hitpoints
?????? 16886 0 265
?????? 3837215 0 18604680

Assault Note

Argus(#4755)'s ASN *** fleet engaged nukecow1(#30247)'s fleet on the battlefield.
The fleet ASN *** did 0 damage to fleet .
Argus(#4755)'s ASN *** attack failed.
The fleet did 0 damage to fleet ASN ***.
nukecow1(#30247)'s attack failed.

The fleets close into transporter range...
Argus(#4755)'s fleet ASN *** is sending a boarding party to nukecow1(#30247)'s fleet
The boarding party killed 0 enemy marines and suffered 0 casualties.

Warning: Division by zero in /home/siremi/public_html/bat_report.php on line 1677
nukecow1(#30247)'s fleet self-destructed.

Argus(#4755)'s ASN *** fleet engaged nukecow1(#30247)'s fleet on the battlefield.
The fleet ASN *** did 0 damage to fleet .
Argus(#4755)'s ASN *** attack failed.
The fleet did 0 damage to fleet ASN ***.
nukecow1(#30247)'s attack failed.

The fleets close into transporter range...
Argus(#4755)'s fleet ASN *** is sending a boarding party to nukecow1(#30247)'s fleet
The boarding party killed 0 enemy marines and suffered 0 casualties.

Warning: Division by zero in /home/siremi/public_html/bat_report.php on line 1677
nukecow1(#30247)'s fleet self-destructed.

The enemy armada was destroyed.

Assault result

You boarded Commander Fleets(#)'s fleet and mothership.
You destroyed Commander Fleets(#)'s 0 ships and lost 0/5 ships.

Primary Objective: Destroy 10% of the enemy while losing less percent of the armada then the enemy.

You destroyed many of the enemy armada...

(+41 Exp)

Welcome Argus. Your mothership is ready to receive orders.
Argus(#4755)