java.lang.NullPointerException
   at org.eclipse.jgit.dircache.DirCacheBuilder.add(DirCacheBuilder.java:104)
   at org.netbeans.libs.git.jgit.commands.AddCommand.run(AddCommand.java:182)
   at org.netbeans.libs.git.jgit.commands.GitCommand.execute(GitCommand.java:72)
   at org.netbeans.libs.git.GitClient.add(GitClient.java:275)
   at org.netbeans.modules.git.client.GitClient$1.call(GitClient.java:216)
   at org.netbeans.modules.git.client.GitClient$1.call(GitClient.java:212)
   at org.netbeans.modules.git.client.GitClient$CommandInvoker$1$1.call(GitClient.java:855)
   at org.netbeans.modules.git.client.GitClient$CommandInvoker$1.call(GitClient.java:874)
   at org.netbeans.modules.git.FilesystemInterceptor.runWithoutExternalEvents(FilesystemInterceptor.java:472)
   at org.netbeans.modules.git.Git.runWithoutExternalEvents(Git.java:282)
   at org.netbeans.modules.git.client.GitClient$CommandInvoker.runMethodIntern(GitClient.java:884)
   at org.netbeans.modules.git.client.GitClient$CommandInvoker.runMethod(GitClient.java:815)
   at org.netbeans.modules.git.client.GitClient$CommandInvoker.access$300(GitClient.java:791)
   at org.netbeans.modules.git.client.GitClient.add(GitClient.java:212)
   at org.netbeans.modules.git.ui.actions.AddAction$1.perform(AddAction.java:89)
   at org.netbeans.modules.git.client.GitProgressSupport.performIntern(GitProgressSupport.java:104)
   at org.netbeans.modules.git.client.GitProgressSupport.run(GitProgressSupport.java:97)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1423)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2033)