So you aren't stuck on a years-old version forever, the best thing to do is work out what's causing the problem with Opus 10 and Opus 11. Slow-downs and crashes are usually caused by 3rd party components like shell extensions and video codecs, or can also be caused by bugs in Opus when it encounters specific files, or by configuration (but that would be less likely to affect one version and not another).
If you're seeing crashes which take down the whole program, please email us the crash dumps from a recent version:
[ul][li]Crash dumps for bug reports[/li][/ul]
You can email them to leo@gpsoft.com.au and, depending on the type of issue, we can often use them to tell the cause of a crash, and whether it is coming from Opus or a 3rd party component. Crash dumps from older versions are less likely to be useful, but may still allow us to tell which component is causing the problem.
The following guides may also help narrow down what is causing the problem. If it is a bug in Opus then we can fix it. If it turns out to be caused by a 3rd party component, we may be able to implement a workaround, or you may find the problem goes away if that component is updated or replaced.
[ul][li]Crash, exit or high CPU usage when viewing certain directories[/li]
[li]Crash, exit or high CPU usage when right-clicking certain files[/li]
[li]How to find components causing high CPU usage[/li]
[li]How to find components causing memory leaks[/li]
[li]General slowdown or instability investigation steps[/li][/ul]