The same thing happens to me. Edit post and preview post both return blank screens.
There is no error message in the server error log. Using the fully updated default vBulletin template has no effect. Disabling Ajax has no effect. Clearing the cache has no effect.
I'm stuck and would appreciate any advice.
Environment is:
VBulletin 4.2.0 Patch Level 3
CentOS Linux 6.3
PHP 5.4.11
MySQL 5.5.28
|