我正在尝试在Windows 7 x64上运行redcar，但是遇到了以下错误：
Redcar 0.8.1 ( java )
Error loading plugin: <Plugin swt 1.0 depends:[dep(core >0)] 0 files>
cannot link Java class org.eclipse.swt.widgets.Display, probable missing dependency: Cannot load 32-bit SWT libraries on 64-bit JVM
c:/devtools/jruby-1.5.3/lib/ruby/site_ruby/shared/builtin/javasupport/java.rb:51:in `method_missing'
C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/plugins/swt/lib/swt.rb:129
C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/plugins/swt/lib/swt.rb:31:in `require'
c:/devtools/jruby-1.5.3/lib/ruby/site_ruby/1.8/rubygems/custom_require.rb:31:in `require'
C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/lib/plugin_manager/lib/plugin_manager/plugin_definition.rb:41:in `load'
C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/lib/plugin_manager/lib/plugin_manager/plugin_definition.rb:58:in `log_requires'
C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/lib/plugin_manager/lib/plugin_manager/plugin_definition.rb:40:in `load'
C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/lib/plugin_manager/lib/plugin_manager.rb:128:in `load_plugin'
C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/lib/plugin_manager/lib/plugin_manager.rb:109:in `load'
C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/lib/redcar.rb:111:in `load_prerequisites'
C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/lib/redcar.rb:142:in `load_threaded'
C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/bin/redcar:28
C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/bin/redcar:19:in `load'
c:\devtools\jruby-1.5.3\bin\redcar:19
C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/plugins/swt/lib/swt.rb:50:in `show': uninitialized constant Swt::Graphics (NameError)
from C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/plugins/swt/lib/swt.rb:97:in `create_splash_screen'
from C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/lib/redcar.rb:168:in `show_splash'
from C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/bin/redcar:29
from C:/devtools/jruby-1.5.3/lib/ruby/gems/1.8/gems/redcar-0.8.1/bin/redcar:19:in `load'
from c:\devtools\jruby-1.5.3\bin\redcar:19
错误似乎表明 SWT 是 32 位版本存在问题。由于基于 Eclipse 的应用在我的机器上运行良好，我猜测这里有些东西我没有注意到。
我使用以下步骤安装 Redcar：
- 下载并安装 jruby（使用了 64 位可执行文件） - 运行
jruby -S gem install redcar 安装 redcar gem
- 运行 redcar install
我还尝试从源代码安装，但结果相同。