I run Debian Squeeze x86_64
Linux slappy 2.6.32-5-amd64 #1 SMP Mon Jan 16 16:22:28 UTC 2012 x86_64 GNU/Linux
When launching Flashtool the above string causes the following error:
export: 3: 2.6.32-5-amd64: bad variable name
So in the launch script I've changed the grep to count rather than outputting the string itself (as you're only testing if it's zero or non-zero) and it works fine.
export system64=$(uname -a|grep -c x86_64)
just thought i'd pass that on, sorry if it's been mentioned before..
Anyway, fantastic tool, many thanks!
EDIT: doesn't happen as su, so you may want to ignore