I recently purchased Avast Premier and set it to sandbox Firefox, but flash player always crashed when trying to play videos which is not a problem out of sandbox. I tried uninstalling and reinstalling Firefox but this caused more problems. Now, whenever I open Firefox in sandbox an error message appears in red at the top of the screen saying: "The bookmarks and history system will not be functional because one of Firefox's files is in use by another application. Some security software can cause this problem". I have tried the solution in Mozilla's help section but it does not fix the problem. Again, this only happens in sandbox.
Any help with these problems would be appreciated.
EDIT: I've now noticed problems with sandbox in internet explorer. After a few minutes browsing, I get a message saying internet explorer has "stopped working", it checks for solutions and then says it needs to close. Are problems using the sandbox feature with browsers common?
