Problems with Norton360 AFTER installing LastPass

I have had Norton 360 for many years, works great and I swear by it, I installed LastPass and now I get this error message from norton:

Error: "8504,104" appears on my Norton product.

The Norton Removal Tool uninstalls all Norton 2003 and later products, Norton 360, and Norton SystemWorks 12.0 from your computer. If you have pcAnywhere or WinFax, uninstall it using Add or Remove Programs before running the Norton Removal Tool. Also, if you use ACT! or WinFax, back up those databases and make sure that you have the installation CDs to reinstall the product.

I don't want to uninstall 360!  If I uninstall LastPass, (after I imported logins from 360) will I loose my logins all together?