在centos上安装docnav，Selinux被禁用

我已经在最新的centos 7上安装了vivado 2017.4（我认为是7.4） -  KDE桌面。
Selinux被禁用。
我已经安装并以root身份运行
使用脱机下载的PDF文件
除了docnav，一切似乎都很好
我确实在centos 6上工作正常，但仍然在windows7上工作，所以我熟悉所需的步骤
（除非我忘记了什么）
我似乎无法在Vivado之外启动docnav  - 没有显示错误消息
在vivado里面我无法识别下载的PDF文件。
但它确实运行
设置“运行时环境”面板中的“探索”按钮也不起作用（不要打开窗口）
我已经移动了downloads.xml文件并编辑了路径
我尝试过共享和非共享下载 - 没有区别
我已多次检查文件的路径。
有谁知道这是我错过了什么或与centos或其他任何问题？
还有其他人有离线Centos-7安装吗？
谢谢



以下为原文


I've installed vivado 2017.4 on centos 7 latest (7.4 I think) - KDE desktop.
Selinux is disabled.
I've installed and am running as root
Using offline downloaded PDF files
Everything seems fine except docnav

I did have this working OK on centos 6 and still do on windows7  so I am familiar with the steps required
(unless I've forgotten something)

I can't seem to get docnav to start outside of Vivado at all - no error messages shown
Inside vivado I can't get it to recognise the downloaded PDF's. but it does run
Also  the "explore" buttons in the settings "runtime Environment" panel don't function (dont open windows)

I have moved  the  downloads.xml file and edited the paths
I've tried shared and non-shared downloads - no difference
I've checked the paths the files are in multiple times.

Does anyone know if this is me missing something or a problem with centos or anything else?
Does anyone else have an offline Centos-7 install working?

Thanks