Hi sandeep,
i know this post is on the past. but i successfully solved this problem by editing control.xml file
search // get ABAP user informations comment,
then add variable that i marked by read square ( i prefer to backup your control.xml before doing this)
and inserted with string password
save the file and then stop the installation.
started again with the same installation then choose continue with old configuration
i hope this work also to you guys
NB : work with 70SWPM10SP06
Best Regards,
Rony Jusuf