The function number: 1333
The complete error text: it is in German but it says the key wasn't found in the dictionary
The window affected: n/a
What you were doing at the time: booting the game up
Conventional or TN start: TN
Random or Real Stars: real
Is your decimal separator a comma?: no
Is the bug is easy to reproduce, intermittent or a one-off? probably hard
If this is a long campaign - say 75 years or longer - let me know the length of the campaign as well: 87 years
I lost all AI controlled opponents. There used to be precursors, there last known presence was in GJ 1028, and there was an NPR in 82 Eridani that also claimed the neighbouring system of Giclas 9-38. Nothing in the Intelligence window either, as if they never existed.
The previous save still has the AI opponents. I got error messages when disassembling things from scrapped precursor ships. Not sure if that is related, but I
think that was already before the last save with working opponents and might have been when the disassembly would have given enough RP to finish the tech. But I still had to do the last couple of RP with a scientist (which would be appropriate, someone who knows what they are doing should look over the data.

)