Problem entering enemy sector
 

My fleet does not enter a sector with an enemy planet defended by a ship and a starbase. 2 turns ago i gave order to move to the sector, but the fleet moved only to the neighboring sector and the order disappeared. Last turn i gave order to seek after the planet, but the fleet did not move at all, but this time the given seek order still shows up.
My fleet contains 3 Warships (one of them is fleet leader), a minesweeper and a transport ship with troops, the fleet strategy is set to capture planet. The Fleet has enough Fuel(all ships quantum reactors) and Movement points, also it is unlikely that Intelligence ops cause the problem.

I have a lower player number then the attacked player. No Mods are used and the Last patch is installed, the game is played via PBW.
I had in this game in the past the very same problem some times, but with a different enemy empire.

I appreciate Any ideas what could cause this problem as well as any workaround. TIA

Re: Problem entering enemy sector
 

I have encountered this problem from time to time, too. IIRC it is a bug and it is fixed in the gold Version. The only thing you can do is dissolve the fleet and attack with each ship on its own. But don't sue my, I could be wrong about this.

Re: Problem entering enemy sector
 

Is that sector a known minefield?
The "don't move through minefields" option might be at fault (it applies to minesweepers as well as other ships)