I had a quick look and it is not same issue as previous
Anyway, I found an error in ruleset V0.6.1 : look for "- id: STR_HOVERTANK_LAUNCHER" (line 11576), attributes are not defined
Could it be that this kind of issue come back still HOVERTANK have been implemented ?
Because I see something that doesn't make me confident : declaring a ufopedia dependent on many requirements
As an example
It seems to me that this may cause strange behaviour
It has to be checked, but I guess a ufopaedia entry should always have only one "requires:"
If need more, create a research topic with cost 0 that include these requirements, then declare this new research entry as unique requirement of ufopaedia entry
Beware that I did not yet make all the tests to affirm this