Firefox Session Manager file access error [SOLVED]

[Paul-G]

I have recently been experiencing the following error when running Firefox in the Sandbox. The error is from the Session Manager add-on.

Code: Select all

This operation failed due to a file access error:
backup.session(NS_ERROR_FILE_IS_LOCKED)

writeFileNext/<@chrome://sessionmanager/content/modules/session_file_io.jsm:1823:5
onStopRequest@resource://gre/modules/NetUtil.jsm:77:21

Normal Firefox is running OK.

I have searched the complete Sandbox folder and no .jsm files exist. All files / folders checked to ensure no write only flag set.
I can create/update an existing session save without error. It appears to be the timed autobackup that is causing the error.

Windowws 7 Ultimate SP1
Sandboxie V5.20 64bit
Session Manager V 0.8.1.13
Firefox 56 64bit
Avast 171014-0

[Brummelchen]

close firefox and clear sandbox content!

[Paul-G]

Thank you, that worked but it leaves me curious as to what was causing the error. Never mind, fixed now.