upgrade from 1.6.15 to 1.8 get blank admincp page

[Samanw]

after upgrade to 1.8 from 1.6.15 i get blank page in admin after submit login details....
any idea how can fix this?

[.m.]

can we have your forum url ?
can you check server error log available at web host panel to find the cause ..

[JordanMussi]

Did you run the upgrade script?

[StefanT]

This thread may help you: http://community.mybb.com/thread-158529-...pid1098655