Sounds to me like you have either:
1 - A bug in the research projects that are given by the research. If the research allows new manufacturing/UFOPaedia entries that don't exist, the game will crash on completion.
2 - A badly made UFOPaedia article, which is referencing resources that don't exist.
Either of the above is not unlikely to be because of interference between mods. I'd say it's quite likely that it has nothing to do with the core OXC engine.