Lost all research

You most likely agreed to a treaty that had a no research provision.

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Space Empires Depot | SE:V Balance Mod

Check your treaties and in future never agree to an AI treaty without checking it through first as they will sneak in no research and other clauses which you might not want. Treaties are not the good thing they where invariably in SEIV they can thoroughly screw you over to put it bluntly

Look through the general forum (and look abck a few pages or more) and you will find half a dozen threads about peoples starting stratergies, particularly look for threads started by Maran, as he had some he used for doing research for his mod.

Just becareful with treaties, other catches you want to pay atention for are no intel, no treaties with any other race and no planetry bombardment (this stops any of you ships from ever shooting at any planet until this treaty is changed or scrapped, which is a real bummer as it means you can't destroy weapons platforms before you send your troop ships in.).