I´m using Win7 64 bit as well but do not experience this problem.
I just checked to be sure: When i forward an email with attachments to TR they appear as Thoughts, at that point in time i can not click the link. When i have processed it i can click it and it will launch the file.
When i put a file link in manually i can also click it and launch the file.
One thing that might be different is that i launch TR by tr.exe and not tr-launcher.exe. My etc/tr.conf looks like this:
### ThinkingRock Configuration File ###
default_userdir="${HOME}/.thinkingrock/tr-3.1.1"
default_options="--branding tr --fontsize 13 --laf javax.swing.plaf.metal.MetalLookAndFeel -J-Djava.endorsed.dirs=tr\modules\ext\endorsed -J-Xms128m -J-Xmx128m -J-XX:PermSize=64m -J-XX:MaxPermSize=256m -J-Dsun.java2d.noddraw=true -J-client -J-Dorg.netbeans.ProxyClassLoader.level=1000 -J-Xverify:none"
jdkhome="C:\Program Files (x86)\Java\jre6"
I changed jdkhome and memory settings (-Xms and -Xmx) as i had performance problems with TR swapping out of memory and taking lots of time rebuilding the screen when the app became active again. I do not thinkthis is related, but you never know.
Kind regards,
Bram.