Can open an HTML file with Browser but not HTMLViewer I have an HTML file on my SD card.  Opening it with &quot;Browser&quot; works as expected. However, if I try to open it with the built-in app &quot;HTMLViewer&quot;, I receive the following error message:

Web page not available
The Web page at File URI could not be loaded:
The requested file was not found.

Obviously the file is there since I can open it with Browser.  This was not a problem on Android 2.2.1.
Why can't HTMLViewer open an HTML file?
The HTMLViewer mentioned does not like spaces in the file name. Rename the file with underscore or throw them out.