[TYPO3-english] Blank screen after copying site

[Peder Høy Kristensen]

Hi,

An annoying problem: I copy a TYPO3 ver 4.7.12 site to a test domain located at the same web host as usual. I update the site to ver 6.1.1, and everything works well after replacing / modifying the incomaptible extensions. NOW THE PROBLEM: When I move the updated site to the proper domain, modify LocalConfiguration.php, do the usual chmod stuff and delete all files in typo3temp I get blank screen in both fronted and backend. I tried it several times. How come?

Venlig hilsen / Best Regards
Peder Høy Kristensen