Open Buildsharer problem on PC 1.35 (pls help)

#1
Hi, so I recently downloaded buildsharer into the normal folder of mods, and I renamed two bp files to txt files. I put the txt file into the Imports folder of buildsharer, and I went into the game, pressed import, and it only said "exit importer". I do not know what happened and I want to be able to import bp files. (files in question attached)
 

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