lindabell1007, here is what I got. MIME type errors are going to show on the device anytime you are trying to access (download) a file that is not supported by the device. "MIME allows the Web browser to handle file types that are not web pages (audio, video, documents, etc). It does that by using MIME handlers. A MIME handler is a link to a seperate application that is dedicated to that type of content (for example, the Video player installs a MIME handler for Video content). This error occurs when the Web browser tries to access content that does not have a MIME handler (for example, if you try to access a .wmv video. .wmv videos are not supported by the TouchPad Video app and will generate this error)." you can try and fix it by "Find a webOS application (through App Catalog or through Preware) that supports the type of content you are trying to access and install it on your TouchPad." there is plenty of information about this on here. Hope this helps, good luck.
Basically, the difference is that you are saying that the TP won't open the file because the relevant application is not installed. That may be the case sometimes. But the TP also has a more fundamental fault in that often it will also not open files for which it does have the relevant file installed. For instance, it oftens happens when trying to access pdfs when Adobe Acrobat is installed and .doc files when Quick Office or a.n.other is installed.
As you correctly say a file extension (.doc, .pdf etc) is associated with a file type, so that your browser knows how to work with it. But with the TP is will often download the file with an .aspx extension instead of interpreting the file correctly. The .aspx (Active Server Page Extended) file extension stores script and source codes that allow web browsers to translate and open web pages. Virtually all web browsers can 'decode' the script and then use the correct application to open the file. The TP browser fails to do so. Instead it just downloads the .aspx and just goes 'huh, what am I supposed to do now?' and gives you the MIME error.
Currently there are only two real solutions:
1) Install Preware on your TP and then install 'Internalz' - a file management application. You then download the document you want to open. Navigate to the document using Internalz and alter the file extension from .aspx to whatever it should be (.pdf, .doc etc). Then choose to open it and - hey, it works.
2) Install Android and your TP and forget about WebOS.
Finally Devwithoutpower on WebOS Nation has created a solution apparently - see http://forums.webosnation.com/native-app...
However, I have tried it and it won't work for me. There's some confusion as to whether it works since the 3.0.5 WebOS update, which I run. So personally - I just use Android now.
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.