Success! Thanks for the fix - against all odds due to you guys having difficulties replicating the issue!
I did the dance:
Installed a fresh Site Shaper, updated J3.2.0 to J3.2.1, loaded it in FF and made sure it crashed - which it reliably did.Then replaced the JS file
, cleared all caches, loaded Helion again in FF and let it sit there... no crash since then!
Bingo! Or to say it in user "snaddy's" terms: Amen!
Great job as always! Many thanks!