From Bugzilla Helper:
User-Agent: Mozilla/4.0 (compatible; MSIE 5.5; Windows 98; Win 9x 4.90)
Description of problem:
Installer gave internal error and traceback, sometime after reading
packages. First traceback line is for /usr/bin/anaconda line 520
Actual Results: Installer asked me to submit a bug report to
Partitionless text install, Sony Vaio FX290
Created attachment 26035 [details]
installer created this file
I think you may have a bad cd. Please look on VC4 by pressing <Ctrl><Alt><F4>
and see if there are any errors reading the cd.
Thank you, that was the problem.