cd to where the .bash_profile is located.
If you can't do that because of permissions, you'll need to change it using chmod.
For example: if the user's path is /home/zeroh
you would type: ls -lad /home/zeroh
this will give you the current permissions for the directory. Note it down on paper.
Then you can change the perm by typing: chmod 777 /home/zeroh
Next, type: cd /home/zeroh
THen change the perm for the bash_profile: chmod 777 .bash_profile
then you can edit it and save it.
log in as the user and check if it fixed the issue.
after that you can change the permissions back again.
* NEVERMIND ALL I WROTE