Added some troubleshooting measures to determine if another plugin is interfering with BB.

src/blenderbim/docs/devs/installation.rst

@@ -253,3 +253,30 @@ Required static assets are:
 
     bim/data/gantt/jsgantt.js (from jsgantt-improved)
     bim/data/gantt/jsgantt.css (from jsgantt-improved)
+
+
+Troubleshooting
+-------------------------
+
+Sometimes other Blender plugins will interfere, and cause bugs with BlenderBIM. 
+
+To troubleshoot, it is suggested to temporarily remove (rename) the folder with 
+all the plugins.  Depending on your OS, it could be located in one of the following locations
+::
+
+    - Windows
+      - USER: %USERPROFILE%\AppData\Roaming\Blender Foundation\Blender\2.79\
+      - SYSTEM: %USERPROFILE%\AppData\Roaming\Blender Foundation\Blender\2.79\
+    - macos
+      - USER: /Users/$USER/Library/Application Support/Blender/2.79/
+      - SYSTEM: /Library/Application Support/Blender/2.79/
+    - Linux
+      - USER: $HOME/.config/blender/2.79/
+      - SYSTEM: /usr/share/blender/2.79/
+
+After renaming the folder try a fresh BlenderBIM reinstall and then test to see if the same 
+problem exists. Similarly, you can rename individual plugin folder to conduct a trail and error to 
+determine which plugin, specifically, is causing the problem.
+
+If the same problem persists, to reenable all your plugins, simply undo the folder name change you did above. 
+You will also want to delete the newly created folder which contains the version of BlenderBIM you just installed.