Hello, I was inquiring myself that if I put a newer version of Mesa in a separated folder, I could tell Opera to use mesa libraries of this folder to provide software acelerated WebGl, instead using the older libraries with hardware acelerated WebGL? If that it is possible, how I shall proceed? Many thanks for any help

I don't have that option. Anyway, I tried to delete it through command line using administrators privileges and didn't work. I am reasonably sure this is also the cause for not being able to run Opera

Ok I tried to delete the directory and it deleted, except by these files:
rm: cannot remove opera-12.16-1860.i386.linux/profile/cookies4.dat': Input/output error rm: cannot remove opera-12.16-1860.i386.linux/profile/vlink4.dat': Input/output error
rm: cannot remove `opera-12.16-1860.i386.linux/profile/widgets/wuid-e7253920-6ee5-11e4-8ad4-c47c57315376/cache/activity.opr': Input/output error

Any ideas of how I can delete these three remaining files and the containing dir ?

When I said it was installed system-wide? I probably should have mentioned it before, but someone shouldn't take it as a certain. Anyway, I won't install it system-wide, so I need alternative ideas

./opera-stable? This doens't exists here

So, no diagnostic tests that I can do? If so, I will be forced to delete the directory and install it again. If that it is the case, is the "bookmarks.adr" the only file related to bookmarks?

Hello, I was using Opera normally until a certain day it stopped from working. When I run .opera, nothing happens. The window doesn't show up, no message from the terminal and it is not in the list of ps -A.
What can be? Thanks for any input

Thanks it worked. Still curious about why https://duckduckgo.com doesn't work

No, it's 12.16. When I try to enter opera://settings/searchEngines in a new tab, it opens http://help.opera.com/error/. I did install the extension and works fine. Still curious about why the other way is not working.

Hello, I recently added the duck duck go to the list of search engines. I verified that I entered the correct site's address. In fact the duckduckgo symbol even shows up like the yahoo! or bing ones. The problem is that when I enter a string for search nothing happens, unlike with all the other options. What can I do?