What is line 201 for you and is that one of our files? Does not look like it.
Basically to convert to VB3 takes little time
Go into phpmyadmin and change the settings table setting 41 to vb3 from vb2
Edit your photopost config and enter your exact VB
License number not customer number where it states and then in the cookieprefix make it bb
This assumes everything else on cookies was aligned when you ran vb2
Now your login should be fine.