add troubleshooting doc

DesktopHub/troubleshooting.md

@@ -0,0 +1,20 @@
+---
+title: Troubleshooting
+sequence: 40
+keywords: installation
+---
+
+In the event that an installation fails, in most cases Inedo Hub will show the product with the failed installation as uninstalled. Note that
+after an upgrade, **no data is deleted** from your original instance, so you may safely reinstall the product by specifying the same database
+connection information.
+
+However, if a failed install/upgrade causes the software to appear already installed, or even causes Inedo Hub to fail to load, perform the following steps:
+
+	1. Ensure your database/files are backed up, just to be safe
+	2. Try to uninstall the product (this will **not** delete any of your data)
+	3. Uninstall Inedo Hub
+	4. Stop all services related to the installed product (these will all start with INEDO in the service manager)
+	5. Delete all data from `C:\ProgramData\upack`
+	6. Delete the product installation from `C:\Program Files\<ProductName>` if necessary
+	7. Download Inedo Hub and install
+	8. Reinstall the product using your original database