Security update broke Citrix

I use Citrix to access my office network, and have been using the latest version (10.00.6) since it was launched a week or so ago. Today I installed the new Leopard security updates on my MacBook, and now Citrix won't work - I get an error message "Error in connection file "users/(me)/Library/Preferences/Citrix ICA Client/Modules": Cannot find section "ClientManagement". Error number 11

I tried reinstalling Citrix (twice), but it's still broken. I have not updated my G5 with the security update, and Citrix (same version) still works fine on that. Anyone have any ideas? Apple? Thanks!