I just ran into this issue and I’m not sure how it happened. I’ll leave this here in case someone’s googling. The download_libs.sh script created duplicated files with a number appended to them. So I had several files duplicated:
openFrameworksLibs_master_vs2015_32.zip openFrameworksLibs_master_vs2015_32.zip.1 openFrameworksLibs_master_vs2015_32.zip.2 ...
This caused the script to fail with:
Uncompressing libraries vs2015 from openFrameworksLibs_master_vs2015_32.zip [../scripts/dev/openFrameworksLibs_master_vs2015_32.zip] End-of-central-directory signature not found. Either this file is not a zipfile, or it constitutes one disk of a multi-part archive. In the latter case the central directory and zipfile comment will be found on the last disk(s) of this archive. unzip: cannot find zipfile directory in one of ../scripts/dev/openFrameworksLibs_master_vs2015_32.zip or ../scripts/dev/openFrameworksLibs_master_vs2015_32.zip.zip, and cannot find ../scripts/dev/openFrameworksLibs_master_vs2015_32.zip.ZIP, period. Error on or near line 176; exiting with status 1
Deleting all repeated files solves the problem.