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I finally managed to get my Linux box connected to the Internet, and ran all the upgrades. Consequently I now get errors when starting Konqueror with the message "Could not find mime type application/octet-stream".
Also Konqueror no longer launches kwrite when I click on a .conf file, and it will not act a s a web browser when I type in URLs on the navigation line.
I tried the above suggestion (via the desktop control centre). Adding the application 'octet/stream' didn't help, but I then added the application 'octet', which seemed to clear it up. I'm a newbie, so have no idea why it works, or even what the problem was in the first place.
Ice9 linked to a suggestion which mentioned deleting the file /home/userID/.kde/share/mimelnk/application/octet-stream.desktop. However, in my setup, the file wasn't there. Also, both konqueror and control center were down so I couldn't mess with the file associations. And typing kded into the console simply told me that it was already running ^_^.
However, I found the file at /usr/share/mimelnk/application/octet-stream.desktop. Rather than delete the file, I changed its name to octet-stream.desktop.bak. All seems well now.
My distro is Fedora Core 4 so that may explain why I found the file in a different location.
I had this problem when I tried to open a text file after installing a cabinet extractor program. It showed up when I opened the file browser also. I followed the simple intructions in this link and all seems to be working. Hope it helps.
it started when i associated kwriter to open an empty file extension (file with no extension). it was unknown mime type. i use the "open with dialog" to change it, which later changed my /root/.kde/share/mimelnk/application/octet-stream.desktop
now, for fixing it i used you first advice which changed the file and all works great :-)
here is the corrected file:
I had same problem on Debian Etch netinst i386 with fresh updates. The problem occured after I installed FCEU and associated (manually) filetype nes (Nintendo Entertainment System cartridge image) to it. In my mimetypes there were no octet or octet stream mentioned. When I renamed the abowementioned file to bak, clicking on nes is not starting fceu, but asking open with question. Not good. And my octet-stream.desktop file has already that Hidden=false.
How do I start my nes files with fceu then?
Edit: Ehh, I did it again, same way and now it did not create that file. And it works.