scale and block_size do not work, error output

[applebait]

I tried a few options, none worked.
For scale:

asciigen -i image_input.jpeg -o image_output.png -c -s 5
[1]    57208 trace trap  asciigen -i image_input.jpeg -o image_output.png -c --scale 5

asciigen -i image_input.jpeg -o image_output.png -c -s 0.5
[1]    56832 trace trap  asciigen -i image_input.jpeg -o image_output.png -c -s 0.5

For block_size:

asciigen -i image_input.jpeg -o image_output.png -c --block_size 16
thread 1477856 panic: integer overflow
???:?:?: 0x100650cbb in _main.convertToAscii (???)
???:?:?: 0x10064f8d7 in _main.generateAsciiArt (???)
???:?:?: 0x10065c403 in _main.processImage (???)
???:?:?: 0x10065c7f7 in _main.main (???)
???:?:?: 0x10065cd27 in _main (???)
???:?:?: 0x1810e8273 in ??? (???)
???:?:?: 0x0 in ??? (???)

[seatedro]

this probably doesn't work because the brew release isn't the latest! it works if you build from source