Are you serious?

[Firemetal]

Look at this! It just can't move forward and dock! Something is obstructing it but what? Is it the engine mount or the terriers? And is there a solution? Thanks!

Fire

[George van Doorn]

Yeah, very likely one of those Terriers is hitting something, probably the docking port itself, but your screenshots don't truly show the problem or I don't see it that well. Are you familiar with docking usually? Is this the first time that your docking is obstructed by objects? You could try to rotate the ship with the engines (q-e), or come in slightly up/down. You can activate Advanced Tweakables from the settings and then right click something, like a port, then click on Aim Camera. It could help you get a better view on what is colliding and how you could (maybe) adjust it.

[bewing]

4 hours ago, Firemetal said:

And is there a solution?

Not once you're in orbit, nope. You clearly need to use the "move" gizmo in the editor to move your docking port down by exactly that much. Unless you want to try editing the save file.

[Firemetal]

9 minutes ago, bewing said:

Not once you're in orbit, nope. You clearly need to use the "move" gizmo in the editor to move your docking port down by exactly that much. Unless you want to try editing the save file.

Well dang.

 

1 hour ago, George van Doorn said:

Yeah, very likely one of those Terriers is hitting something, probably the docking port itself, but your screenshots don't truly show the problem or I don't see it that well. Are you familiar with docking usually? Is this the first time that your docking is obstructed by objects? You could try to rotate the ship with the engines (q-e), or come in slightly up/down. You can activate Advanced Tweakables from the settings and then right click something, like a port, then click on Aim Camera. It could help you get a better view on what is colliding and how you could (maybe) adjust it.

Alright so it is the terriers. Yes I am quite familiar with docking. And this is my first time docking with obstructed objects. And I spent a good few minutes rotating it and using ijkl to move it into place. Both pictures were taking using the aim camera feature. So I'm probably just going to have to redo the mission with the terriers a little more spaced out.

Fire

[psychogre]

I recently discovered an odd behavior, most likely the same thing you've encountered.

Using KAS, I was mounting a docking port on the end of a Twin-Boar engine (temporarily needed for some construction tasks for a larger ship).  I intended to put a short girder in between the engine bells, and add the docking port on top of that.  Surprised to get the girder "mounted", offset from the end, but exactly lining up with the ends of the engine bells.  Must be the collision mesh box, or something related.

Based on this behavior, you might be able to solve your problem (assuming you have the KAS mod installed) by simply doing a tool-equipped Kerbal EVA to re-mount the docking port.  If this works how I think, you'll end up with an offset docking port that appears to be floating, but you'll be able to dock the ship with it.

[fourfa]

Questions like these - where the invisible colliders are quite different from the visible model textures - are handled really well by a newish mod called Collide-o-Scope.  It's opened up a whole new world of precision vehicle interaction for me.  Check it out.