Hello,
I've been using your Download Manager (S3) app for a long time, and I enjoyed it very much. The moment I needed to upgrade my Mozilla and then I had to upgrade your plugin too. Since then, problems have begun.
1st skipping between multiple windows and dsb hiding on some of the windows without a logical explanation.
2nd would be good to have an option not to ask me if I want to open a file.
If there's a choice of where to upload the previous version, I'm glad to do it because it worked great!