我试图多次部署相同的应用程序（相同的WAR文件）（作为多个CloudFoundry应用程序）。我只想添加实例，但我想为两个不同的应用程序提供不同的环境变量。我能够vmc推送第一个副本罚款。它按预期启动和运行。但是，第二次尝试部署应用程序时，收到以下错误：
Uploading app_name... FAILED
Upload failed. Try again with 'vmc push'.
TypeError: can't convert nil into String
For more information, see ~/.vmc/crash
当我按指定查看崩溃文件时，它提供以下堆栈跟踪：
Time of crash:
2013-03-11 22:19:41 -0500
TypeError: can't convert nil into String
multipart-post-1.1.5/lib/composite_io.rb:84:in `initialize'
multipart-post-1.1.5/lib/composite_io.rb:84:in `open'
multipart-post-1.1.5/lib/composite_io.rb:84:in `initialize'
cfoundry-0.5.2/lib/cfoundry/v1/base.rb:57:in `new'
cfoundry-0.5.2/lib/cfoundry/v1/base.rb:57:in `upload_app'
cfoundry-0.5.2/lib/cfoundry/upload_helpers.rb:48:in `upload'
vmc-0.5.0/lib/vmc/cli/app/push.rb:86:in `block in upload_app'
interact-0.5.2/lib/interact/progress.rb:98:in `with_progress'
vmc-0.5.0/lib/vmc/cli/app/push.rb:85:in `upload_app'
vmc-0.5.0/lib/vmc/cli/app/push.rb:53:in `sync_app'
vmc-0.5.0/lib/vmc/cli/app/push.rb:46:in `push'
mothership-0.5.1/lib/mothership/base.rb:66:in `run'
...
我错过了什么？任何帮助表示赞赏。提前谢谢！