My add-ons didn't stay around under SBIE using Seamonkey

[sanbox man]

I added addons for Seamonkey browser not using SBIE. Restarted, closed. Then opened
SBIE Seamonkey browser but I didn't see any of the addon's that I had added a moment earlier without SBIE.
How do I get my addons to stick under SBIE Seamonkey. Usually under Firefox that would work (what I did).

[bo.elam]

Delete contents of the sandbox. Afterward, addons will appear when you run Seamonkey in the sandbox.

Bo