Error applying site theme: A theme with the name "Jet 1011" and version already exists on the server.

在为SharePoint 站点开发站点主题，并将其部署在SharePoint站点上是有可能会出现一下错误：“Error applying site theme: A theme with the name "Citrus 1011" and version already exists on the server.”

然而，删除已经部署的主题。并应用系统自带的Theme还是提示相应的错误：“Error applying site theme: A theme with the name "Themename 1011" and version already exists on the server.”

还好找到了相应的解决方案：

1.使用SPD【Sharepoint Designer】打开站点，删除站点下方的_theme目录。

2.运行-》IISreset，重启IIS。

3.应用新主题。

4.应用成功！