how to install this thing?
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i just copied it to %appdata\...\strive and all saves freezing at 37%.
There is only one reason that a portrait pack should cause the game to freeze; if you have too many images and try to open the manual image selection for a slave, then it will crash because it tries to create too many GUI nodes for the images in the same moment. Therefore the cause is something else, and based on your prior post you seem to be editing code, which may seem harmless but it could go wrong in any number of ways.
Supposing that you did not want to reset your changes, I recommend getting the Debug mod (
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). Please read the installation instructions as using the mod system will reset all the game files to the backup files and wipe any changes you have made. The Debug mod will enable error messages which will give clues to the cause and the source of the error.
Please note that the Debug mod will change how the game responds to errors and this may appear to fix your crashing problem, but this is only because the program will sacrifice any part of itself to keep the program running and that includes the integrity of the data, so check for errors before saving.