Tonight I had a good example of how interactions between mods can look like bugs.
I was trying to find a way to fix an issue between the lightning effect from ‘Storms & Sound’ and the rain effects from ‘Natural Environments’ (sometimes, the whole sky stays bright after a lightning strike).
In the process of my troubleshooting, I ended up changing the load order between these two mods.
I forgot about it after I gave up tryng to figure this out, and while I was playing some more, I came across a systematic crash when using transportation from ‘Cyrodiil Transportation Network’.
Oblivion would just crash each time I selected a travel destination.
It turns out the game crashed when trying to apply a new weather pattern after I selected a destination to travel to. What looked like a bug in CTN was in fact caused by a wrong load order between weather mods.