From: phasis@... Date: 2014-06-13T01:02:45+00:00 Subject: [ruby-core:63148] [ruby-trunk - Bug #9936] wrong zlib1.dll installed on windows Issue #9936 has been updated by Heesob Park. I confirmed the error message "%1 is not a valid Win32 application." occurred with 32-bit zlib1.dll and 64-bit ruby.exe combination. I guess that Claudio installed Ruby 2.0.0-p481 (x64) to C:/Tools/ruby200 folder first. And intentionally or accidentally, he installed Ruby 2.0.0-p481 to the same C:/Tools/ruby200 folder. Or vice versa. ---------------------------------------- Bug #9936: wrong zlib1.dll installed on windows https://bugs.ruby-lang.org/issues/9936#change-47206 * Author: Claudio Bley * Status: Third Party's Issue * Priority: Normal * Assignee: cruby-windows * Category: platform/windows * Target version: * ruby -v: ruby 2.0.0p481 (2014-05-08) [x64-mingw32] * Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN ---------------------------------------- I'm using Windows 7 64bit. Running e.g. "gem help commands" results in the following error messages: ~~~ ERROR: Loading command: build (LoadError) 193: %1 is not a valid Win32 application. - C:/Tools/ruby200/lib/ruby/2.0.0/x64-mingw32/zlib.so ERROR: Loading command: check (LoadError) 193: %1 is not a valid Win32 application. - C:/Tools/ruby200/lib/ruby/2.0.0/x64-mingw32/zlib.so ERROR: Loading command: cleanup (LoadError) 193: %1 is not a valid Win32 application. - C:/Tools/ruby200/lib/ruby/2.0.0/x64-mingw32/zlib.so ERROR: Loading command: generate_index (LoadError) 193: %1 is not a valid Win32 application. - C:/Tools/ruby200/lib/ruby/2.0.0/x64-mingw32/zlib.so ERROR: Loading command: install (LoadError) 193: %1 is not a valid Win32 application. - C:/Tools/ruby200/lib/ruby/2.0.0/x64-mingw32/zlib.so ERROR: Loading command: pristine (LoadError) 193: %1 is not a valid Win32 application. - C:/Tools/ruby200/lib/ruby/2.0.0/x64-mingw32/zlib.so ERROR: Loading command: push (LoadError) 193: %1 is not a valid Win32 application. - C:/Tools/ruby200/lib/ruby/2.0.0/x64-mingw32/zlib.so ERROR: Loading command: rdoc (LoadError) 193: %1 is not a valid Win32 application. - C:/Tools/ruby200/lib/ruby/2.0.0/x64-mingw32/zlib.so ERROR: Loading command: server (LoadError) 193: %1 is not a valid Win32 application. - C:/Tools/ruby200/lib/ruby/2.0.0/x64-mingw32/zlib.so ERROR: Loading command: specification (LoadError) 193: %1 is not a valid Win32 application. - C:/Tools/ruby200/lib/ruby/2.0.0/x64-mingw32/zlib.so ERROR: Loading command: uninstall (LoadError) 193: %1 is not a valid Win32 application. - C:/Tools/ruby200/lib/ruby/2.0.0/x64-mingw32/zlib.so ERROR: Loading command: unpack (LoadError) 193: %1 is not a valid Win32 application. - C:/Tools/ruby200/lib/ruby/2.0.0/x64-mingw32/zlib.so ERROR: Loading command: update (LoadError) 193: %1 is not a valid Win32 application. - C:/Tools/ruby200/lib/ruby/2.0.0/x64-mingw32/zlib.so ~~~ Seems zlib.so depends on zlib1.dll, but the zlib1.dll delivered using the installer is a 32bit instead of 64bit DLL causing the errors. Replacing the zlib1.dll in the bin/ folder with a proper 64bit version makes the "gem help commands" succeed. -- https://bugs.ruby-lang.org/