Unable to upgrade LaunchPad

[se5a]

If I right click and upgrade, it takes the money away, the pad model changes for a second, then changes back to level 1. 

right clicking on it again it's still level 1 with all the weight and size limits. 

I've got Kerbal Construction Time installed, but only the sim enabled in this game. 

I attempted to edit the save game trying to fix this, but seem to have made it worse, it's now at level 0 and refusing to upgrade. I created a new game and upgraded the LaunchPad in that to check my edits and it looks fine comparing anything where LaunchPad is mentioned, however when I load the broken game the launchpad gets reset back to 0.

 

What could I be missing? 

Edited January 21, 2016 by se5a

[blerik]

I had the same problem. Just click on the KCT icon, and select 'disable mod' from the settings screen. Click save and try to upgrade again. That should work. Afterwards you can enable the mod again.