When I try to update FDT 4.1, I get 2 errors, one tells me that the system is not computable, and the other says some of components are not supported. I thought I updates subversion(not that i use it) last time, so I am not sure if this is an FDT or subversion issue.
I wanted to bring this to your attention in case it is a FDT issue.
Did you try to update FDT via the "Check for updates" feature?
If so please try to update FDT via "install new software" and select the update url: http://fdt.powerflasher.com/update