Error in docked transfer

[Dr. Kilgore]

Hello everyone,

first time in this forum so, hope you treat me well

I finally managed to dock two space stations (quite a hard job, because both were pretty long and the SAS shook more than MJ Fox) but now I have a problem. It seems that my dock was useless because I just wanted to transfer fuel from one station to another so I could send that to Mun. But when I ALT+Right click it appears the option of fuel transfer but the IN and OUT buttons appear just for 1 milisecond and then stay blocked. (First the button look blue and then just like plain text). And even if I click there or something nothing happens.

I need your help or my mission would be stupid.

Thank you very much

[AlexinTokyo]

Are you playing in career mode? If so, you need to have upgraded the R&D facility to at least tier 2. Which (thinking about it) you must have done to unlock docking ports in the first place, so that's not the problem.

Can you post a screen shot with the resource tab in the upper right open and the Alt-Right-Click menus of both tanks open?

Also, are you using any mods?

[Dr. Kilgore]

Are you playing in career mode? If so, you need to have upgraded the R&D facility to at least tier 2. Which (thinking about it) you must have done to unlock docking ports in the first place, so that's not the problem.

Can you post a screen shot with the resource tab in the upper right open and the Alt-Right-Click menus of both tanks open?

Also, are you using any mods?

No, I'm in sandbox mode.

Later I'll post a screen shot

I'm using a few mods, now I can't remember which ones.

[-Velocity-]

No, I'm in sandbox mode.

Later I'll post a screen shot

I'm using a few mods, now I can't remember which ones.

The mods could be the problem, weren't there mods that messed with fuel balancing by transferring fuel around?

[Dr. Kilgore]

it's the first time that this happens to me, so I have no idea.