oldturkey03 - unfortunately that is not the answer. On the HP Touchpad there is an issue whereby the browser will not open some files that is DOES support and generates the MIME error. For example .pdfs. Most of the time .pdfs do open, but fairly often the MIME error results. The browser doesn't recognise the file type (even though the same file from the site will open no problem on other devices). The only way to then open the file is to browse to it using Internalz and add the correct file extension. Then click and it will open.
Basically the Touchpad is not fit for purpose.