check how many bricks load ingame, and then go about twice that down in the console and look there for a single " line (~2 lines in the save per brick)
or for this one, open the file in notepad and use ctrl+F to search for one of the lines (1x1" -125.25 89.25 0.3 3 1 56 0 0 1 1 1)
then delete the line