Champion Level 3What version of TestComplete are you running?
You said "prior to" - have you actually installed patches from here? Which ones?
https://support.smartbear.com/downloads/testcomplete/firefox-patches/
Based upon the article at https://support.smartbear.com/testcomplete/docs/app-testing/web/general/preparing-browsers/firefox.html disabling multi-process is only necessary for certain scenarios.
If Firefox is running in this mode, TestComplete might experience issues with:
Detecting web dialogs like Alert, Confirm or Prompt.
Detecting the browser’s active tab.
Testing Flash and Flex applications.
If you're not doign any of those in your automation, there's no need to disable the multi-process.
