Science tree disappeared in R&D lab

[Oz89]

Hi everyone,

First post here, so let me first say to the dev team how much I love this game, keep up the good work !

Second, English is not my native language so please forgive my mistakes.

I came across a bug in the R&D lab during my career. The science tree completely disappeared after I (finally) managed to dock a space station in orbit around the Mun, see screenshot below:

I began this career mode on my computer but as I was travelling a bit, I copied / pasted the save file (.sfs) on my laptop to continue. I managed to make this space station and after doing some science, I wanted to spend it on new tech. And there the science tree didn’t appear.

I had mods on my KSP install (Chatterer and Kerbal Engineer), so I uninstalled them to see if the problem came from here but still no science tree. Everything else seems to be working just fine, just no science tree.

I tried to start a new career on my laptop and the science tree was available, with or without mods.

So my guess is my save file is corrupted in some way. Did anyone come across this bug before? Is there any way to restore the save file to make this tree appear again?

My specs:

Last version of KSP v1.0.4.861

Windows 7 on my PC, 8.1 on my laptop

Playing on steam

If nothing work, I’ll just have to wait to get back home to play on my original save file but this is annoying so any workaround is welcome

Thanks !

Oz

Edited July 13, 2015 by Oz89

[sal_vager]

Hi Oz89, please search your persistent.sfs for "TechTreeUrl", it should point to "GameData/Squad/Resources/TechTree.cfg", but may be pointing to a module manager file.

If that line is correct please upload your KSP output_log and save file to dropbox for us

[Oz89]

Hi sal_vager

Thank you very much, that was the problem ! I changed the line and now it works.

THe TechTreeUrl was refering to "GameData\ModuleManager.TechTree" for some reason.. I guess it's due to ModuleManager mod but since it was not installed for a while now I don't fully understand.

Anyway, I will edit the topic to solved, thanks again.