Sandboxie Support

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

I have recently been experiencing the following error when running Firefox in the Sandbox. The error is from the Session Manager add-on. This operation failed due to a file access error: backup.session(NS_ERROR_FILE_IS_LOCKED) writeFileNext/<@chrome://sessionmanager/content/modules/session_file_io.j...

Solution for me - found in another thread. Win 7 64 Ultimate, SBie 4.20 (64bit), Firefox 43.0.2 Tools, Add-Ons, Plugins, Shockwave Flash. Click on Options then REMOVE the tick from "Enable Adobe Flash protected mode". Without closing Firefox or deleting the Sandbox content I reopened the tab (and ot...